My mom really hurt me by what she said. I think I want to go live with my dad?

I'm a 14 year old girl, I was diagnosed with post traumatic stress disorder about a 9 months ago. I've been seeing a therapist, and I also got put on a med. But I keep having ups and downs, I can feel great for months and then I just crash. The reason for this, is because I was molested when I was 10 by a close family member. Even after I told my parents, I was called a liar by other family members. It was just not something I was ready to deal with, and I still don't know how to control. I am just feeling like $hit right now (don't know a better way to describe it). My mom came into my room an hour ago asking me if I was ok. I was honest about my feelings, I told her that I felt awful. She told me to take a shower and see if that gets me any relief at all. I told her I didn't want to, then she said that I need to be strong and try to live life the way I deserve to. I told her to give me a break and leave me alone for a little while. When I said that, she told me that I am not trying and that I am being selfish by acting that way. That really hurt me. I try my hardest to get over this, but after so long I feel like giving up. I've been dealing with this for 4 years! It's a lot to deal with, and I don't have a choice but to deal with this just because someone else decided to hurt me. I'm just to tiered right now to "be strong" like she wants me to be. And what hurt the most, was that she called me selfish when I have no control over my feelings right now, and if she really knew how much it hurts she wouldn't call me selfish she would call me strong. Apparently she doesn't understand what I am going through at all. I'm thinking about maybe going to live with my dad, but I'm not sure about it. My dad always says that I am welcome there and everything. But I don't know if he understands how hard it is for me to get by either. I'm scared of moving in with my dad, and then have him do the same thing my mom did, and I don't think I can take another disappointment. I'm scared of getting hurt. What should I do?