He did punch her. Repeatedly. After the slap he goes into full blown fight mode, which was overboard. Towards the end he finally just bear hugs her and over powers her, which is what I would've done (and have done in the past). I grew up with an older sister who would get pretty physical. We fought a lot, she usually won when I was just a little kid and she was a lot bigger than me. Once I grew up though, and could easily over power her, I would either bear hug her or just grab her flailing arms and push her away or something.