Healing After Columbine: Survivors, Victims' Families Talk About Moving Forward It's been 17 years since Dylan Klebold and Eric Harris attacked their school.

 -- Sue Klebold, the mother of Columbine killer Dylan Klebold, is breaking her silence for the first time about how she dealt with her son’s involvement in the massacre, but Columbine survivors and victims’ families are also still grappling with the pain of that horrific day 17 years ago.

Columbine survivor Anne Marie Hochhalter was a student at Columbine High School when Dylan Klebold and Eric Harris opened fire on April 20, 1999. She was one of the 24 people wounded. Thirteen more would die before Klebold and Harris turned their weapons on themselves and took their own lives.

Hochhalter was shot twice, once in the back and once in the upper arm. She was paralyzed from the waist down but the arm wound was the one that was life-threatening, she said, because the bullet went through and “hit everything.” She suffered nerve damage and endured a long, painful recovery, but over time she said she tried to move on and find peace.

“I realize that holding onto that anger does nothing,” she told ABC News. “You know, it just brings you down.”

About five years after the shooting, Hochhalter said Dylan’s mother Sue Klebold tried to reach out to her, but she didn’t reciprocate at the time.

“It wasn’t a reflection of her,” she said. “I couldn’t handle it.”

But on Thursday, Hochhalter posted an open letter to Sue Klebold on her public Facebook page, saying “I have forgiven you.”