A former employee and close friend of Stephen Paddock, the gunman who carried out the deadliest mass shooting in U.S. history, has spoken out to say that the man she knew was seemingly incapable of committing such a horrific act.

In a Monday appearance on Good Morning America, 54-year-old Lisa Crawford, who managed a Dallas apartment Paddock owned between 2006 and 2012, opened up about how her interactions with the gunman gave her no indication of what he was apparently capable of doing.

"He actually cared about everybody," Crawford said. "He tried to make people happy, he tried to make people care and I don't know what happened to him."

Here's what we know about Stephen Paddock:

14 PHOTOS What we know about Las Vegas shooting suspect Stephen Paddock See Gallery What we know about Las Vegas shooting suspect Stephen Paddock Stephen Paddock, 64, allegedly opened fire from the Mandalay Bay Resort and Casino on the Route 91 Harvest country music festival, leaving at least 59 people dead and hundreds injured.



(Social media/Handout via REUTERS) He reportedly used a hammer-like tool to break out two windows at the Mandalay Bay Resort and Casino. (Photo by David Becker/Getty Images) Stephen Paddock was reportedly a high-stakes gambler that lived in a retirement community in Mesquite, Nevada. (REUTERS/Las Vegas Sun/Steve Marcus) His father was Benjamin Hoskins Paddock, a bank robber and former FBI Most Wanted Fugitive. (FBI/Handout via REUTERS) Paddock killed himself before authorities breached his hotel room and investigators say he acted alone. (REUTERS/Las Vegas Sun/Steve Marcus) Paddock's girlfriend, Marilou Danley, was in the Philippines at the time of the shooting but he reportedly used her identification to check in at the Mandalay Bay hotel. (Las Vegas Metropolitan Police Department/Handout via REUTERS) Stephen Paddock lived in this home in Melbourne, Florida from 2013 to 2015. (Joe Burbank/Orlando Sentinel/TNS via Getty Images) Police said Paddock had no criminal record. (Photo by David Becker/Getty Images) NBC News reported that Paddock made several large gambling transactions in recent weeks, but that it wasn't clear if they were wins or losses. (Photo by David Becker/Getty Images) Paddock reportedly purchased firearms at Guns & Guitars, a gun shop in Mesquite, Nevada. (Photo by Gabe Ginsberg/Getty Images) Paddock's brother, Eric, said his sibling belonged to no political or religious organizations, and had no history of mental illness. (Photo by Marcus Yam/Los Angeles Times via Getty Images) Paddock's brother described him as a "wealthy guy" and said he liked to play video poker and go on cruises. (Photo by Gabe Ginsberg/Getty Images) He worked as an accountant and had real estate investments, according to the Washington Post. (Photo by Drew Angerer/Getty Images) Paddock had his pilot license and owned at least one plane, according to Reuters.



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Crawford also described Paddock as a humorous man who was generous with his employees and tenants.

She said the last time the pair spoke was a couple of weeks before the attack when Paddock emailed her to make sure she made it through hurricanes Harvey and Irma unscathed.

"I have read [the emails] over and over and over again," Crawford said. "I've even looked at some photos online of, I guess, him and his girlfriend. You know, I was even trying to look into his eyes to see if I saw something that wasn’t normal, you know. No, I didn’t see anything."

Crawford said that she had a mental breakdown after learning about the massacre which left 59 dead, adding that she feels "guilty" for even having known the shooter.

“I can’t believe that the person that I knew would even consider hurting somebody. I want so bad to have answers for people," Crawford said. "I want to solve this. I want us to do whatever I can to tell the authorities to look here, look there.”

"I have cried for those people so many times, I almost feel like I’m out of tears sometimes," she added. "It could have been my mom, my children."

Crawford is currently cooperating with the FBI in hopes that she can provide authorities with any relevant information about Paddock and his potential motive.

These are the victims of the Las Vegas attack:

53 PHOTOS Victims of the Las Vegas shooting See Gallery Victims of the Las Vegas shooting



(Photo via GoFundMe) Chris Roybal of Southern California, was a Navy veteran who served in Afghanistan, ABC News said. He was 28.(Photo via GoFundMe) Sonny Melton (pictured right) is seen with his wife Heather, who survived the shooting. (Photo via Heather Gulish Melton) Quinton Robbins, 20, is described by his aunt as "the most kind and loving soul." (Photo via Kilee Wells Sanders/Facebook) Jordan McIldoon (left), 23, of British Columbia, was confirmed dead by his parents as well as fellow concert-goer Heather Gooze, who said McIldoon died in her arms. (Photo via Facebook) Victim of the October 1, 2017 mass shooting at the Mandalay Bay in Las Vegas, Jordan McIldoon, is seen in this undated social media photo obtained by Reuters October 3, 2017. Social media/Handout via REUTERS Jassica Klymchuk, a single mother of 4, was visiting Las Vegas from Alberta with her fiancé. (Photo via Facebook) Lisa Romero worked as a secretary at her local high school in Gallup, New Mexico. (Photo via Facebook) Denise Burditus, of West Virginia, was attending the concert with her husband, and died in his arms. (Photo via Facebook)



(Photo via Twitter) Rachael Parker was a records technician for the Manhattan Beach Police Department in California, she was 33.(Photo via Twitter)



(Photo via Facebook) Susan Smith worked for the Simi Valley Unified School District in California.(Photo via Facebook) Adrian Murfitt was a commercial fisherman in Anchorage, Alaska, the Alaska Dispatch News reported. He was 35. (Social media/Handout via REUTERS) John Phippen of Santa Clarita, California, was a father of five, grandfather of one and owned a remodeling and repair company. (Photo via GoFundMe) Angie Gomez was a 2015 graduate of Riverside Polytechnic High School in California. (Photo via GoFundMe) Victim of the October 1, 2017 mass shooting at the Mandalay Bay in Las Vegas, Angie Gomez, is seen in this undated social media photo obtained by Reuters October 3, 2017. Social media/Handout via REUTERS Dana Gardner (pictured left) was attending the concert with her daughter, according to a GoFundMe page set up in her memory. (Photo via GoFundMe)



(Photo via Facebook) Rhonda LeRocque attended the concert with her husband, and their 7-year-old daughter, who were not injured, according to the Boston Globe.(Photo via Facebook)



(Photo via Facebook) Jenny Parks was a wife, mother to two young children and a teacher, according to a GoFundMe account set up in her memory.(Photo via Facebook)



(Photo via GoFundMe) Nesya Tonks was the mother of three boys, according to a GoFundMe set up by her employeer, Technologent.(Photo via GoFundMe) Hannah Ahlers is survived by her husband and three children. Photo Credit: Facebook Carrie Barnette, 34, was in Las Vegas for a friends 30th birthday party. Photo Credit: Nicole Johnson Sandy Casey had taught special education for 9 years at the Manhattan Beach Unified School District. Photo Credit: Manhattan Beach Unified School District Victim of the October 1, 2017 mass shooting at the Mandalay Bay in Las Vegas, Sandy Casey, is seen in this undated social media photo (Social media/Handout via REUTERS) Thomas Day Jr. is survived by his four children who attended the Route 91 Harvest Festival with him. Photo Credit: Thomas Day Jr./Facebook Charleston Hartfield, 34, was an off-duty Las Vegas police officer, youth football coach, and military veteran. Our… https://t.co/UafOdLrcFz Bailey Schweitzer was only 20 years old and had just started working at Infinity Communications and consulting as a receptionist 7 months ago. Photo Credit: Infinity Communications and Consulting Victim of the October 1, 2017 mass shooting at the Mandalay Bay in Las Vegas, Bailey Schweitzer, is seen in this undated social media photo obtained by Reuters October 3, 2017. Social media/Handout via REUTERS Victim of the October 1, 2017 mass shooting at the Mandalay Bay in Las Vegas, Melissa Ramirez, is seen in this undated social media photo obtained by Reuters October 3, 2017. Social media/Handout via REUTERS Victim of the October 1, 2017 mass shooting at the Mandalay Bay in Las Vegas, Jack Beaton, is seen in this undated social media photo obtained by Reuters October 3, 2017. Social media/Handout via REUTERS



(Photo via Christiana Duarte had begun working at her first full-time job since graduated college, according to the Los Angeles Times.(Photo via Facebook



(Photo via Stacee Etcheber was a mother and wife to a San Francisco Police Dept. officer.(Photo via Facebook



(Photo via Jennifer Topaz Irvine was a family law attorney based in San Diego, according to CBS News.(Photo via Facebook A fourth Kern County resident has passed away: Family of 27 y.o. Kelsey Meadows, confirm that she is the fourth Ker… https://t.co/DdzsCXbBh5



(Photo via Calla Medig was described as a kind-hearted young woman with a beaming smile, according to CBC News in Canada.(Photo via Facebook



(Photo via Cameron Robinson (pictured right) was an amazing friend, son, brother, uncle, cousin, coworker and boyfriend known for his love of cooking and dancing, according to a fundraising page set up in his memory.(Photo via GoFundMe Family tells me Kurt Von Tillow from Cameron Park was killed in #LasVegasShooting. Say he ❤️ his country. Always wo… https://t.co/w7Ndiq5YlO Bill Wolfe Jr. was a loving husband and a wrestling coach in Shippensburg, Pennsylvania.

(Photo via GoFundMe)



(Phot via A fundraising account set up for Dorene Anderson (pictured top left) described her as a loving wife, mother, sister, aunt and friend.(Phot via GoFundMe Steve Berger was celebrating his 44th birthday with a group of friends, the Milwaukee Journal Sentinel reported. (Photo via EFS Advisors)



(Photo via Tara Roe Smith was the mother of two young sons, according to the Canadian Press. She was reportedly separated from her husband, Zach, during the shooting.(Photo via GoFundMe Erick Silva has been identified as one of the victims in the #LasVegasShooting https://t.co/uv3taTQCqU Brennan Stewart had a love for music and his family requested that the funds raised from a GoFundMe account set up in his honor be used for a local youth organization that is centered around the arts. (Photo via GoFundMe) Michelle Vo was attending her first country music concert, according to the San Jose Mercury News.

(Photo via Facebook)



(Photo via Heather Alvarado loved to travel with her three children and her husband, according to a statement released by the Cedar City Police Department to local media.(Photo via GoFundMe Denise Cohen was a mother of two who was attending the concert with her boyfriend. (Social media/Handout via REUTERS) Victim of the October 1, 2017 mass shooting at the Mandalay Bay in Las Vegas, Jordyn Rivera, is seen in this undated social media photo. (Social media/Handout via REUTERS) Candice Bowers was a single mother of three and is described her as a superhero who loved country music; she was ki… https://t.co/9qh6ARaN2I



(Photo via Andrea Castilla was celebrating her 28th birthday with her sister, boyfriend and her sister's fiancee, according to a GoFundMe page set up by her family.(Photo via Facebook



(Photo via Austin Davis was considered a friend to all, according to a fundraising site set up in his memory. He was 29.(Photo via GoFundMe Chris Hazencomb saved his friend's life by shielding her, the Ventura County Star reported. He was 44.



(Photo via GoFundMe) Victor Link, 52, “I could type for hours saying how great of a man you were and how everyone loves you so so much.”… https://t.co/qu3fOQ3jY7 Lisa Patterson was a loving mother, wife and donated countless hours to her community, according to a GoFundMe account. She was 46.



(Photo via GoFundMe) Rocio Guillen Rocha was still on maternity leave after giving birth to her fourth child six weeks ago, NPR reported. She was 40.



(Photo via GoFundMe) Derrick "Bo" Taylor served the Ventura Conservation Camp for decades according to statement by the California Department of Corrections & Rehabilitation. He was 56.



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