Dsethi and Tkim11 are on the money on this one , this bitch has lied to you about RAPE in the past. Think about that for a minute before we continue. It sounds like she is a master manipulator control freak looking to use you as her chief puppet. As most caniving cunts will do, she sees your father as a threat. Somebody you are close with and trust, she wants to destroy that trust, so in the future ( after your married) you will side with her on certain key issues , instead of with Pops. Its all in the cards my brother, and so obvious. The good thing about this is that she is your fiance ( which in French means "you can still get the fukk out before its too late !!!" ) And I suggest you do just that. Theres plenty of fish in the sea, if you just got out of the slammer ... I'd go on a "Fishing" trip and ditch this bitch.
ps I'd go with Smartass's advice if you really do love her and want to go along with the marriage
Well said especially the French part