It would seem to me, DDuck, that she has something she needs to talk about but is the type that won't talk about the very things that need to be addressed. And if she's anything like my ex-wife, if you ever do get her to talk about her issues outside of a therapist's office, the conversation won't be productive.

I would suggest having her talk about her dissatisfaction in the marriage without directly bringing up your problem with the infrequency of sex. Chances are, the reduction of sex is as XRayDiva suggests, a symptom of something else she's dissatisfied with.

Apparently it is hard for some women to just say what their problem is and what they want. It's an astonishing thing to say, given how much many women like to talk, but blabbing is apparently different then making a request of someone.