Les carnassiers (1992)

Alice, a young Portuguese woman, escapes from a psychiatric hospital where she is locked up under the orders of her father-in-law who intends to take away her inheritance. On her way to France, she falls victim to a truck driver who she kills to defend herself. A few moments after this murder she meets Bernie, a young boxer, who will take care of her, going so far as to hide her from the eyes of the police and the detectives in the pay of her stepfather. He is preparing for the title of world champion.