I wish I could orgasm that easy, jeez.
Anyway, it all depends on what you mean by "in the mood to have sex" I mean, when a woman masterbates a lot of the time she wants to orgasm, but not to have sex. I mean, being a woman, we can get it whenever we want, but we still choose to masterbate. Sometimes it is just easier and faster and less work to get it done on our own. Lol
but if you mean, she is not in the mood, but has sex anyway, well somewhere along that line the woman would get turned on. So, eventually she would be in the mood (at least enough to masterbate) other than the above two scenarious, I have not idea what else you would mean.