You know, The Hobbit films are no Lord of the Rings, but they are good popcorn flicks, and what the films get right (Bilbo, Smaug, Gollum, some of the setpiece scenes like the dwarven singing and Beorn) they get very right. If those films pass your violence check for your daughter (I mean, at 6 I watched and loved Raiders of the Lost Ark), they'd be fine to watch.