Strike of the Tortured Angels (1982)

Julia, aged 18, kills her sister by pushing her down from the 12th floor, and at the discotheque she hits her classmate's head with a beer bottle. Julia is arrested and sent to the Girls Rehabilitation Centre where she is tortured and savaged by the guards. She soon escapes and wants to kill the doctor. The doctor allures and cheats both her mother and her elder sister.