((((((((((((freewill)))))))))))) I'm so sorry that T is clueless on this. A good T can make such a major difference. We had a situation where a part of the brain was doing things to the body wanting to destroy the body. T helped immensely but it was really hard. She actually had to trigger that part of my brain so she could talk to her. I don't think that's a good idea to try on your own though. It was probably dangerous for T to do that, but it was necessary for survival and so we tried it. Things aren't perfect now by any means, but definitely better, in that area.
Is your T familiar with DID? If not, maybe he can consult someone who is that might help you guys find a solution? I wish you peace in this situation. I understand the feelings of hopelessness surrounding it. I am amnesiac during times when other parts are out and it makes it so hard to not feel hopeless about it sometimes. I hope you find the hope and help you need to overcome this.
Take care.