Puppy - once again I will just say, I hope I am right and you are wrong, because if I am right then there is a chance your marriage and sex life will recover and become what you always hoped they could be....if you are right then she is too flawed of a person to ever hope for any recovery.
One last (for now) thought:
I think there's another theory, far less complex, that would explain her behavior:
She loves me, loves being married and loves our family, knows sex is very important to me (primary LL), but just isn't attracted to me.
In fact, by her silence to me asking her that last year, she more or less admitted that.