Nenette and Boni
Nénette et Boni (original)
Teenage siblings Nenette and Boni were raised apart as a result of their parents' divorce. Their mother, who doted on her son Boni, has died. He works for an interesting couple as a pizza baker, and is surprised and enraged when his younger sister, having run away from boarding school, suddenly turns up. There's a problem that they must confront.
Starring Grégoire Colin, Alice Houri, Jacques Nolot, Valeria Bruni Tedeschi, Vincent Gallo, Alex Descas, Mounir Aïssa, Christophe Carmona, Djellali El'Ozueri
Watch "Nenette and Boni" on Criterion Channel released in 1997. It's a comedy and drama movie, and has a rating of 7 out of 10 from Imdb which is usually fine for this kind of movie.