What is your therapist telling you? I remember going to one when I was a child. My mom put us there at a young age because they were going thru divorce and she just needed reassurance that we were going to be ok. I later listened to the therapist as he explained that seldomly can one person get help in isolation. Usually the best counsel comes from working with your entire social environment. Not always possible, I know. Two things I believe you can do here
- If she is fully convinced you are the one with the problem, then somewhat admit it. Tell her that your therapist told you that unless she participates, there is no solution for you. This in fact is not inaccurate. Many therapists believe that in cases such as yours, there is little to no result working on one mate only. She should feel that she is there to assist the therapist, not to seek assistance for herself.
- Do some research. I believe it won't be difficult to find WT material that shows her that she is wrong from thinking she has no problem.