Driving home from the C one day I had a breakthrough. If asked how good my sex life is, my first thought was "pretty bad". But this was after 7 months of having sex twice a week. By all standards, that doesn't sound like a crappy sex life. Even according to my definition of success, this was a great number.
Question for you, is it just the number, or the 'quality' and feeling? Is the twice a week because she wants to, or to make you feel better or an obligation?
Is she less 'low desire' or just less unwiling?
I think I would feel much better about my sitch if there was more desire, not just more willingness.