Greeneyeglass is right about the EA/PA. It was not about sex and when most women have affairs it isn't about sex at all but about emotional needs that aren't being fulfilled. That was my fault for neglecting certain things and I have paid dearly for it. As far as other things in her past, her family life is really, really good. Her family is very close, parents are still married and very loving, an extraordinary low rate of divorce in her extended family, no abuse and nothing traumatic in her past except for when she was a little kid she had a real strange condition involving her intestines where she had a grapefruit size growth on them (non cancerous) that I doubt would have an affect on her today.
As far as a monitor, I don't need it because she has told me that she doesn't really think about it or fantasize about it. She said that she could go a couple of months without thinking about it. I don't know if there is a medical condition or not. Yes she has always been LD, except when we first started dating but then it is completely normal for someone that is LD to be temporarily HD. Before she and I dated she had only 2 sexual partners because she has never been all that into sex. I hope that little bit of more info is helpful for you.
BTW, I have really strived to put all of her needs before mine since we started dating again 3 months ago. I started doing all of the things that I used to do (which i will continue to do) and it hasn't really helped us in that department. It has made other parts of our life more enjoyable but not in the sex dept.