Yeah, I agree that it would be helpful if your fiancee came here and posted her side of the story. You have a good deal of anger going on, and she is being painted as somewhat of a sexual compulsive or rather inconsiderate of you. Not saying that is or isn't true, but it is only your perspective.
You two have choices in front of you. Above everything, your daughter comes first and after that you may want to examine whether or not you want to stay in this relationship at all.