I think you would be better off focusing on the issues in co-parenting rather than the demise of the relationship. Therapists' notes can be entered into evidence and courts generally don't care why relationships broke down. If you focus on the actual problems she is causing on a day-to-day basis in co-parenting, I think your concerns will appear more kid-focused and not make the therapist think this is just about you not being able to get over the loss of the relationship with her. I think you get to the same place, but this approach prevents them from questioning your motives.
