Dozens of people saw her final act. Tim Blankenstein went on Twitter afterward: “Sadly, just witnessed someone jump off the roof of a 4 story building in #westloop. Cannot imagine her mental anguish. #shaking.”

I looked up Blankenstein. He lives in a second-floor apartment facing the Luxe.

“She was halfway committed,” Blankenstein said. “She was holding herself up by her arms. I started shaking.

“I took a picture to have evidence that this actually happened. What I felt afterwards was I was just sad, and I felt awful for her, and for that building.”

I understood. I took an iPhone picture, too, of Kendra — a tiny dot — on the ledge.

Blankenstein said he searched online and social media but found nothing about what happened. He didn’t know Kendra’s name or anything about her, “but the image of her will stay with me for a while.”

Emily, a property manager at the building where Blankenstein lives who wanted only her first name published, said she was driving to work when she saw the red fire trucks and an ambulance on Madison Street.

“I thought: ‘It’s a fire alarm. Whatever.’ ”

She parked and walked to an office to make coffee. She reached for a stapler near the window and saw Kendra on the roof.

“I thought: ‘No way I am seeing this.’ It was this eerie feeling. No one was in the office. I got, like, almost ill.”

She noticed the bystanders watching, about a dozen of them on the street.

“One guy was off to the left taking pictures, which I thought was bizarre. Another guy was on his iPhone, taking video.

“What was weird to me was that there did not seem like there was this immense sense of urgency. That’s nothing against the first-responders, but it probably doesn’t faze them as much as it fazes me.”

Emily said she watched for about 10 minutes as Kendra “looked back and forth, contemplating. You could almost see that bargaining or rationalizing or whatever goes through your mind at that moment. I thought, ‘Oh, s---, she’s not coming down safely. Then, she jumped.’

“I remember a girl was in her trench coat, she had her iBuds in, she had a little dress on, clearly walking to work, got stuck in all of this chaos and was talking to someone on the phone. And I remember my eyes meeting hers, and she was just crying.

“I think we, as humans, have a natural curiosity to view these things that are either taboo or something you don’t see a lot, if ever. So I felt the conflict of, ‘I’m curious,’ but I did also feel almost like, ‘It was wrong, it was invasive.’

“That said, she’s choosing to put this display out in front of the public, which almost made me angry. She’s pulling all these people into her karmic web, and it’s kind of like, f--- you, now I have to process all of this s---, too.”

Diana Novak is a former Chicago Sun-Times reporter now covering courts for a website, Law360. She lives in the Luxe building. Her husband was walking their dog at about 7:30 a.m. He saw the woman on the roof but “didn’t think a lot about it because they regularly had workers on the roof,” Novak said.

Novak walked outside to go to work at 8:10 a.m. “There was crime-scene tape to the right of the door. And I saw at least one pink flip-flop laying in the middle of where the tape was.