According to popular legend, Cassie was confronted by one of the Columbine killers and asked if she believed in God. When she responded to the affirmative, she was shot dead. But official investigation into the killing spree revealed that this event never took place.
Cassie's mother, Misty Bernall, authored a book on the story of her daughter's life, titled She Said Yes: The Unlikely Martyrdom of Cassie Bernall. Cassie's martyr myth also inspired songs by contemporary Christian artists Michael W. Smith and Flyleaf.