Sorry to hear this @Samicat! Feeling with you in your pain!

There is nothing we can do about it when other people ignore us, like trying to sit as far from us as possible at a meeting and so on... We have to learn to look past such experiences and try to act as naturally as possible (as if we haven't noticed).

I know it is easy to say so, but it will happen again and again as long as we live. I have found it best to ony tell few people about it. Some people say that if others cannot accept them as they are, they can go. I think that we cannot expect others to know about our diseases. Even for us it took time to learn enough about it in the beginning. (In this case your "friend" has experienced something that probably has scared the "heck" out of her and she does't know the difference about I or II, or may be between medicated or not medicated).

I try to forgive people. It isn't easy, but it is helpful. It can be difficult to move on when one has to be together because one belongs to the same group. I try to do relaxation exercises before I have to meet people I know look down on me. Then I try to bring that relaxed state with me into the group and behaving so naturally as possible.

It doesn't always work, but it works more then it fails.

Am sending you a link about the health benefits of forgiving:
Forgiveness: Your Health Depends on It | Johns Hopkins Medicine