Tristan was brutally shot and murdered in bed last night . Please help this family. This is my Nieces stepdaughter. She was spending the night with her Mom for her birthday. She was home alone when this happened. Her little Brother found her laying face down with a gunshot wound to the back of her head in the bed.  Tristan was a cheerleader at her school. She lived with her Dad Phillip Dilley & Stepmother Mindy Dilley.