I daydream a lot to, and make up fake lives. Except mine are never, ever, grounded in a real setting - right into full out fantasy and science fiction I go. I find it easier to get back out of it.

I'd take a guess that maybe you imagine yourself in different CSA scenarios because they feel like less of a betrayal than the abuse from your father feels. Parents are SUPPOSED to be out ultimate protectors, and your father failed at that so badly. You totally aren't a freak for daydreaming like that. It probably would also help in processing what happened when you can make the situation a bit less personal by having someone else as the abuser - it lets you take a tiny step backwards to look at it.