I'm not against corporal punishment at all for a child. But this went way overboard. It was abuse,IMO. Seven minutes of that is too much and the way in which he was doing it was more to inflict pain than to correct. I was spanked by hand and with a switch off a tree many times when I was young and it was nothing to this degree. Also 14 is little too old for corporal punishment too. Especially to a girl. You really have to wonder about the dad.