`Anne Marie Hochhalter, a survivor of the Columbine High School mass shooting, died Sunday, her former principal, Frank DeAngelis, told FOX31 on Monday. Hochhalter, 43, 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.`