This is definitely a disfunctional family. There is no way my child would even think about talking to me in that tone of voice let alone slap me. This young man definitely had control in this situation. As a matter of fact when he slapped her she instantly became fearful of him you can tell it in her reaction to the slap. But what she should have done was to never let it get that far in the beginning. Take notice parents, this is what children do to you when you become their friends and not their parents...there is no fear...anything you fear you will respect.