and grab her coller (gently!) and lead her outside, because being alone is the WORST possible punishment you could EVER do to her. It's like a time-out. I works great for us. 5 mins later, I let her back in and she is good.

This is a training method Tyr's trainer suggested when he would "play" way too rough-jumping up and grabbing me with his mouth and sometimes really hurting me.
He suggested I say"no" "bad"and walk out of the room, and leave him a lone for a while and come back 5 or so minutes later and do it every time-most dogs hate to be left alone-and when they find certain things they do will make you go away-they will stop doing it.
It worked with Tyr-it's the only thing that worked!
But hitting-major No-no-just makes the situation worse. I would get angry and push him away-not hard-not enough to hurt him - but he would get more excited and come back harder, thinking I was playing with him.
Hitting confuses the dog-so try to avoid doing it again. I know sometimes you reaact to a situation out of anger-but you have to think-if this was your child-would you reaact like that-and in a way aren't they our "children" so to speak?