Cassie Bernall was known for her love of christ, and was killed for it. When the gunmen asked if there were any christians in the room. She stood up and was shot. She was known as being always happy, and she was loved by many people. Cassie was interested in poetry and active in her youth group, as were many other Columbine High School students.
Note: There is now confusion as to whether Ms. Bernall was ever asked this question. Take it as you will.
For More Information About Cassie Bernall, please Visit: Cassie Bernall
Check Out Michael W. Smith's Video In Memory Of Cassie Bernall! This Is Your Time
Thanks to Tim for this link