Maybe you took what she said too literally, meaning, if you are not interested in joining a book club, joining a group or club relating to something that does interest you. Maybe what she is trying to say is that you should get out and do something that takes your focus off of yourself and your problems. I know when I sit around and whine about
my problems and dwell on them they are so much worse. Shift your focus, even for a short period of time and see if you get positive results. I can verify 100% that walking and exercise greatly reduces depression and anxiety. Therefore reducing the need for meds.
Maybe next time you go, you can ask her to help formulate a plan for you to start small and work your way up. You have to be willing to do the work to get well. If you really dislike her, they are a dime a dozen, I am sure you can find another.