Pat gave you tons of wonderful information, and I hope that some of it is a big help to you. I just wanted to add my voice in supporting you. I am astonished that more concern and respect was not paid to your disability and that you were expected to climb stairs, etc. This seems insensitive at best and dangerous for you at worst. And then on top of that to have had a traumatic experience within the group makes my heart go out to you.
You are not being selfish or unreasonable. From what you write, I can tell that you are an extremely smart and thoughtful woman who is doing a good job of managing both physical and mental challenges. It's not easy and yet you work hard at it and you don't give up. You should be so proud of yourself for this. And I hate that your good efforts took this difficult turn.
Please stay in touch with us. And don't give up on finding the care that's best for you. I think you are awesome.