DepicT! 90 second idea

Two friends Luna and Emi  are hanging out and chatting at the local park. The bully Catherine  comes along and starts picking on Emi calling her horrible names and starts pushing her around. Luna tries to stand up for Emi but backs down as she doesn't want Catherine to bully her as well.

   Then Emi starts to have a go at Luna because she didn't  stick up for her and starts taking her anger out on her which ends up really hurting her friend. Luna runs off because she knows she has been a bad friend and she trips over, falls down the concrete stairs and breaks her neck. Emi hears a bang and she runs to where it comes from and she sees her friend in a heap on the floor with blood around her. Then she quickly runs down the stairs and tries to get Luna to respond but she doesn't.
 Emi starts crying out for help and feels guilty for shouting at Luna.

   Catherine walks along and Emi knows what she has to do. She rummages through her bag to grab the knife she knows she has and starts walking like she is to going to cry and runs up the stairs towards Catherine and starts to attack her. She pushes her to the floor and continuously stabs  her in every part of her body until she has no blood left in her and then she walks off laughing.