Hi T,

I'm not looking forward to tomorrow. I don't want a session with you and replacement T. I want you as my T. I chose you! I didn't chose to get a replacement T for 5 months after more than a year of therapy with you. It wasn't my choice! This isn't what I signed up for!

I don't know what to talk about. Sure, there's probably a lot of stuff, but...

I got the results of the test I took yesterday. I did very well. Now I can take part in those exams in May. And if I pass those, then I can start college in August. You know how important this is for me. You know how much I want this (I don't really want to go to school. Or I do. It's a bit hard to know what I want because of what the anxiety makes me think and feel. But I want a life. And I need an education for that.).
If you wouldn't be leaving in a few weeks, I would have immediately send you an email to tell you about it. But I don't feel like telling you. What does it matter. You won't be there for me during my exams. You won't be there during my first few weeks of college.
And I also don't feel like starting to talk to replcement T because I don't know her, she doesn't know me. And the first weeks of college would be the last weeks with her. If you really do come back. And if I want you back. And if I haven't quit her before that.
And I will quit her if she isn't good/right for me. I won't waste any more time on bad/unfit T's anymore.