I really commend you for being level headed about this shit LE. Honestly, had there not been a baby in the picture I'd've told you to go beat dude near death. But now I suggest you just take the high road and just leave her alone. This isn't something you just up and forgive the lady for right now. Just say you can't be with her right now and just move on. Keep in contact with your daughter and make sure she doesn't try to use your daughter as leverage to keep you from straying elsewhere. Sorry it had to happen to you