Don't know the answers to your specific questions, but letting you know I've read your post. I had similar experience with my mental health midwife, she also brought student along, and her visits actually stressed me out further. I didn't want discharge from service m just from her, I just communicated honesty with her, telling her that her style was not working fir me, and what other styles can she use, I also asked her what her role was, what her responsibilities and what is her objectives on dealing with me.. if you ask those questions you can get the answers and begin new conversation with CMHT worker, and hopefully guide the way your visits happen and get what you need. At the moment it sounds like he's doing what he thinks he should do rather than what's needed. Take back contro, and if that fails, talk to your go and get them to contact the service manager in your behalf.