I'm sorry you are having a tough time. I have anxiety, too.

Just a thought- do you think you will stop writing to her? How can she make you do anything?

I hate reading emotion-laden letters to my therapist, too. But many times reading them to T has led to emotional breakthroughs and new insights for me. Perhaps you can print out your post and read it to T. You might learn why she wants you to do it. You may learn why you dread it so much.

A little self discovery is not altogether a bad thing.