=( I wish more parents payed attention in General Psych 101. Out of the 4 types of reinforcement, intermittent positive reinforcement is by FAR the most effective way to get the behaviors you want. The other 3 don't even come close.
ALL people have the inherent right to feel safe and free from excessive force. So what about when she turns 18 does it then become illegal?
Yes because according to the law they are of legal age to gtfo the house and/or defend themselves, which usually results in them having to gtfo anyway. I'd also like to reiterate that he put her in no danger of death, or physical disablement, so that whole point is moot.