The parents of an 8-year-old girl who died after choking at her school have released a video of the horrific moments as they demand accountability. Adrienne Thompson was eating in the cafeteria at Velma Penny Elementary School in Lindale, Texas, in April when she started choking. Surveillance video shows her going to an adult for help, then running down the hall toward the nurses' office. Someone eventually called 911, but by the time she got to the hospital, it was too late. She died the next morning.