the movie starts with a girl who visits her family, maybe her mother's family, she was locked up in some college or boarding school, and she takes out all the family members one by one, she has sex with everyone in order not to go back to where she was. The film ends with the girl achieving her goal and the family finally sending the daughter off to some college as they had a falling out with her cousin. I also remember a scene where she seduces her aunt by pretending to be sad. And in another scene, she makes out with her cousin at night, outside, maybe some forest. It's a soft, erotic film. The film is either Italian or French and I remember seeing it around 2000. Wish I remembered more. Any ideas?