I brought my husband to a couple of the sessions when I started working with my current T. It was a different dynamic than the one you are describing as he was helping me explain some issues. As your t suggested, I think bringing my husband helped my t and my husband each see the dynamic I have with the other.

My husband and I had been in couples therapy about 15 years before the session I described above. What I thought was an issue with our relationship was actually undiagnosed depression and anxiety in me. That is, perhaps having your wife go with you might reveal something to her about herself.

I hope things work out for you both.