Your post got me to thinking...maybe there should be another term for LD for some people such as Mrs. B. She seems to be more, as you said it, intimacy-avoidant. Which doesn't mean the same as LD. She has a rich fantasy life and does crave sexual release, she just avoids intimacy, not sex (even if much of her sex life is with herself). Whereas many LD's avoid both the intimacy and the sex, or literally have no desire for sex at all but do want intimacy and closeness.
I found out I was in this intimacy-avoidant category too, all the while thinking I was LD, when I was married. Now I realize I did in fact have many intimacy issues...but not that many actual sex issues. Wow! What a shock!
Anyway, not that it helps, just that there is a difference and I think you are going to get much farther much faster than if she didn't have a rich inner sexual life like she does.
Congrats on the argument repair...I am learning these lessons, also, and much from the 7 principals book!
I'll go and post an update on mine here in a minute...