I really don't think it's an overreaction to be stressed out about some big changes happening with a person you have relied on for seven years. Many people in your situation would be freaking out. I also wonder whether trauma T might be able to think through helpful solutions. Sometimes when I'm upset about something, I can't strategize very well. Your trauma T might be able to point out something you can't see right now. Or maybe you could see her more often instead of seeing them both?