Ghosts(2005)

Original title: Gespenster

Nina, a mentally ill teenage orphan, starts a new job as a garden cleaner when she meets Toni. They fall in love but soon Toni starts betraying Nina. Meanwhile, Francoise is picked up at a Berlin psychiatric hospital by her husband, Pierre. After spotting Nina, Francoise believes that she has found her kidnapped daughter Marie, but no one believes her.