Update:

My session was today. It went alright. I had written down some feelings and thoughts. We didn't had enough time for all of it. So she hasn't heard my angry thoughts, I'm most anxious about sharing those. She did understand why it hard for me. She already thought I would be having a hard time with this. She also said that those months will fly by (I don't agree with that. Maybe for her it will, but not for me).
She also thinks that having a different T for a few months would be good for me. Then I can experience that she's not the only right T for me (I doubt I'll like any new T. Previous T's didn't understoof my anxiety and always gave the same useless advice.) and that I'll maybe get less dependent on her.

She said that if I want to talk more about this, I can bring it up in sessions.

I think I'll need to talk some more. I also need to speak out my all my anxious thoughts and my angry thoughts. I still feel some anger. Mostly anxiety and sadness, but also some anger. And that anger can be destructive for me, I can do bad things when I'm angry. Like just quit therapy all together, never let her hear from me again. I know that wouldn't be good for me, but sometimes I just don't care. I don't really care about me.