My thought is that though the whole scoring thing might sound horrible, perhaps it is all she can do in terms of communicating her sexual desires. I know with XH I could not talk about sex, AT ALL, though I was VERY unhappy with our SL. The point system almost sounds like a strategy from a C as a way for her to start to share information. So, maybe if you can keep it playful it will be good thing and evolve into more substantive communication.
Oh, and one more thing. Have you ever tried tying her up? She wants something that she can't ask for and get. She wants something that if you ask her if it is OK, she can't get. This sounds to me like she would like a little gentle domination, consensual, but not explicitly so.
