It is good to talk to people who understand and have been there. I'm sorry the group is being held in a place that has memories for you but I'm sure whoever shows up needs your support as much as you need theirs. Sounds like it would be a good selfcare to go and see if it helps.

I've been depressed for over 30 years, I know support is important. Keep posting, it's a very support place.

I admire your still teaching the yoga. Yoga is supposed to be good for depression.

Hope you find what the help you are looking for.