I don't mean to make it worse for you, but she did have control, she chose to go on a break, and then chose to kiss someone and told you, knowing full well how that would turn out. She essentially did dump you, but got you to be the bad guy and break it off.
She orchestrated the whole thing start to finish (and everyone predicted it...), if that's not having control of it all, I don't know what is!
As for ringing her dad, just don't bother, it's not worth bothering. She could have told him that you were sleeping around and beat her, who do you think he's going to believe? More to the point, do you think he'll give a f**k why his daughter broke up with anyone? I'm quite sure she's had and will have break ups again.
Sorry to put it all so bluntly, but sometimes it's needed.