Oh gosh yes, it does have an impact on this in my opinion. I to can relate to as a child made to feel bad for having feeling needs or wants.

I was sexually abused, but had this distaste before that. My H was abusive towards me, mentally, emotionally and verbally. It did a real number on my self esteem. It is almost like combative PTSD, the effects it has on my brain and mentality. I am working currently to reverse the effects of that though. The T days it might work, might being the optimal word. I pay close attention to the feelings, and sensations and try to determine what it is that I do not like about it. What do I think about and feel. Then come up w/ combative statements. for example I think "This is so gross" instead I try to tell myself "This isn't hurting me" or "My H loves me enough to show me this way" As of yet it has not helped. But T is hopeful it will. I also have lists of positive feedback written on sticky notes. I put them in places where my H usually kisses me, for example the bedroom, the bathroom, by the kitchen door. It says little things like: No one is gonna hurt me, this is not bad, my H can show he loves me, I like closeness and so on and so forth. Like I said as of yet, no success.

You may be almost certin your girlfriend was not sexually abused, but ask just to make sure. I finially told my H 25 years after repeated rape that it happened. My H and I have been married for 19 years and I just told him about the rape. I didn't realize it mattered. Because for so very long I didn't matter to anyone, not even my H.