lol!
Try Tai Chi sometime! If you want something that is really going to make you feel like a total clutz but still somehow make you significantly stronger, greatly improve balance and coordination, and not tax your heart at all (until you get much better at it) then Tai Chi is right up your alley. It sure has been up mine! And if old ladies helping you out is what you're into, then even better. I'm one of the youngest in my class!
That teacher will help you modify, I should think, if you really do want to go back. It sounds more like torture to me though.
This is something I have never tried weirdly. Pretty much everything else I have tried at some time or other. They don't have it at my gym, but I will try pilates again next. I used to do it several times a week for a decade, but haven't tried in a decade now :)