DENVER (KDVR) — Anne Marie Hochhalter, a survivor of the Columbine High School mass shooting, died Sunday, her former principal Frank DeAngelis told FOX31 on Monday.

Hochhalter was shot and paralyzed during the tragedy on April 20, 1999, and used a wheelchair in the 25 years since. During the massacre, two seniors shot and killed 12 students and one teacher, then killed themselves. Another 21 people were injured by the gunfire.

Hochhalter spoke out in 2016 in support of the mother of one of the shooters who released a book reflecting on the mass shooting, especially concerning her relationship with grief and battles with shame.

Hochhalter wrote at the time in a lengthy Facebook post that she wasn’t sure she would ever read the book, but said she had forgiven the mass murderer’s mother.

In 2012, Hochhalter also spoke publically in support of the families and survivors of the Sandy Hook Elementary Shooting in Newton, Connecticut.

“I really hope the good stories will come out and show a community can come together just like Littleton did after Columbine,” Hochhalter said. “I feel kind of helpless when I hear about these things and I want to help, I just don’t really know how.”

Her brother, Nathan, spoke during a 2024 memorial event about being trapped in a classroom with about 30 students while hearing gunfire nearby. After four hours, SWAT officers rescued them, Nathan said. His mother took her own life six months after the shooting.

“I just want to use this moment to let everyone know that it’s OK to ask for help, whatever your situation is whether, either as a survivor 25 years later or someone struggling with any part of their life. These things come in waves, and they can hit you when you least expect it. You should all know that we’re all here for you and that you’re not alone,” Nathan said.