Of course you have to do what feels right for you, but I am inclined to want to hear a professional out before rejecting their ideas. She could very well be wrong, but isn't it worth exploring? My parents were convinced for years that I had Aspergers, but as an adult I have seen three different psychiatrists and two therapists and none of them have said anything about that. They all agree with my diagnosis of bipolar disorder. I grew up being bipolar, not autistic. It's easy to mistake one thing for the other, especially when you're younger.

I can relate to things going badly over the Christmas break. During my three-week break from seeing my therapist at university I had a complete meltdown and sent her several emails saying I felt like a hopeless case and that I wanted to stop seeing her. I lost perspective on pretty much everything because I had too much time to myself to think negatively and beat myself up. I'm quite depressed at the moment, and felt awful about seeing her yesterday, but I went anyway and I felt much better afterwards.

I guess what I am saying is that I think you should go back and talk to your therapist again. Maybe at the end of that session you'll decide that she isn't the right therapist for you because you don't agree with what she's saying, but at least you'll know for sure that moving on is the right choice. From what you have said here, I see no harm in having one more session, just to clear things up.

Also, try not to get too caught up in the "what's wrong with me" aspect of it. Maybe you have Aspergers, or maybe you have an anxiety disorder. Or maybe you have neither of those things? And if you get diagnosed with something, that doesn't make you "wrong". Believe me, I have been made to feel "wrong" my whole life for not being able to control my emotions, but I'm not "wrong", I just have a mental disorder that makes things a little bit harder for me. I'm actually glad I have the diagnosis, because now I know, and my parents have stopped trying to diagnose me themselves which is a relief!

Good luck!