Honestly, if I was already going to pay for it... I'd go. I'd write everything out and I'd hand it in when I got there - like, everything about the topic that's on your mind.

If you aren't able to hand it in when you get there, and sit in silence? Oh well! Maybe you would be able to hand it in when leaving. And just say, at that point, that you want to have the next week off because you don't feel comfortable being there at the moment.

But this week? When it's already being paid for? I'd go and at least see what I could possibly manage to make myself say. Even saying a little bit more about the topic would be more beneficial for both you and your T than not going.