Sket (2011)

After her older sister is brutally attacked by a notorious gang led by the violent Trey, 16-year-old Kayla is consumed by a need for revenge. Determined to strike back, she is drawn into the world of a rival girl gang run by Danielle, a volatile and damaged leader whose own anger shapes the group around her. As Kayla pushes further into violence, her search for justice threatens to consume her.