She is continuing the fight because it is a variation on this morning's theme of "do you love me?"
She wants to know if he loves her or sex.
She is trying to force him to choose.
It is truly tragic that she can't see that these things are not mutually exclusive.
Hairy, How about this. You call her and say, Wife you are trying to make me choose between YOU and a SEX LIFE.
Here is my choice: I want YOU AND A SEX LIFE. What do you say to that?
Oh and btw, I still have to ask my H "what do you say to that" in order to get him to definitively answer my questions. Otherwise he will answer it with another question, or ignore it altogether. You may have to employ this tactic (or my other favorite "you didn't answer my question") in order to get her to stay on topic.