I would have asked her: what do you do to try to communicate that you want it? Perhaps she needs to be more obvious in her hinting. It's like the old advise to women: "Don't drop hints. TELL us. Better yet, tap us on the head, make sure you got our full attention, THEN tell us, very explicitly, what you want"
Of course, it might be that she doesnt want it, and was just saying that to make you wrong
I think that is what the issue is. I have told her many times, please tell me if and when you want to have sex. Never happens.