It's a bit unclear

I always thought it was an issue with the relationship, but now I suspect that it might be linked to molestation I suffered as a child. At that time, I was told, People who love you dont touch you like that. Logically, I know that this is different, but my partner tells me I just freeze up when we are together.

I think I need professional help, but I am embarrassed and dont know where to start. Do I need a therapist? How do I find a good one?

Can't say for sure, but it seems plausible to me that she didn't receive therapy, but rather a parent/relative told her that (it doesn't exactly sound like professional advice to me). I also believe that in this particular case, some sex positive therapy could do her some good (the type she couldn't get as a child/adolescent). Even if it doesn't put her childhood relationship in proper perspective, it could at least set her straight in her adult relationship. I'd love for her to get in touch with some B4U-ACT affiliated therapists, but I think any sex positive therapist would do, really.

Anyone who interferes between two partners to tell them how they ought to feel ( or how their partner must feel ) should be ashamed. But good luck on finding a professional who will tell you that.

I completely agree with this.