He had ahold of her wrist (and hair, because it got tangled up) because she’d already presented her fist as threat and made a move to punch. It was a defensive measure on his part. She initiated violence not once, but twice before being punched.
You've got to be kidding...... A 6'1 200 lb. kid punching out a young female in "self defense" is an ok thing?
Not in my world bro......