Audiences are filing out of the world premiere screening of Kevin Macdonald’s Whitney at the Cannes Film Festival tonight, a new documentary that sheds fresh light on iconic singer Whitney Houston’s tragic and puzzling rise-and-fall story. Interviewing Houston’s closest family and friends, Macdonald made two illuminating new discoveries that appear in the film: one, that the singer had been abused as a child, and, two, that the abuser was a woman, Houston’s cousin Dee-Dee Warwick, the late sister of soul icon Dionne.