Agree. That’s totally different from saying “you’re the one who is focused on this issue” or “you are the one who has identified this issue as the root of the problem” etc

Also. I’m jealous of my MIL is not an issue to discuss in front of husband in counseling with a therapist. Bc it’s a very fraught issue, cannot be unraveled from her own relationship with her own mother and her husbands relationship with his mother, and her relationship with her husband. (He sounds like a prince too, no offense to author).
You know in movies where someone marries their marriage counselor? I’m pretty sure that these are the magic words that initially open the door to start the relationship: identify the other spouse as the “problem” (other them) and then drag them to the principals office for the sake of the marriage (and to make it look good on paper).