I hope you feel better soon, SorryShaped. I'm glad you may be getting intensive help, though.

I totally understand not wanting to commit to a paid job while feeling so depressed, but it is a wonderful thing that they want to offer you one. Have you considered letting them know you may be interested in such a paid job (if you are), but not at this precise time? You definitely wouldn't need to give any specifics why you don't want to commit at this time. Perhaps just say you have a personal issue that may require possible absence for a bit? Just thoughts. I'm sorry if I don't fully understand, but do think it's nice they like your yoga teaching.