Wow, no end date? I can imagine that would change my perspective on things ... for me it always seems that I get used to people and then the group is up! Have you talked to your T about how you feel about the group? For some people + groups don't go well together.

You have such a strength to analyze your situation, it is very much impressive. I hope you're able to come to some sort of decision regarding group.

Take care of yourself.