Ballet of Blood (2015) on Netflix

Plot summary

Nisa dances at a ballet school that has mistreated its students. She shoots at Sylvie, the company's prima ballerina, and the rest of the company is left on edge. Classes continue while Nisa stays at large. Ria, another dancer at the school, is held in solitary confinement at an asylum as a suspect. Nisa plans an assault on everyone who took part in the bullying and body-shaming over the years. Maren, another ballerina, writes a novel based on those events.