What is the theme in She Said Yes: The Unlikely Martyrdom of Cassie Bernall by Misty Bernall?

Death is always difficult to deal with, but the unexpected death of a young person is more difficult to handle for many. Death that results from violence is even worse, and multiple deaths resulting from violence even worse still. The massacre at Columbine High School affected people around the globe. For the family of Cassie Bernall, the violence was extremely personal. Their daughter was shot at close range, dying after she was asked if she believed in God, and she answered "yes."