How tolerant would you be of a friend who has become unpleasant to be with?

Long story short: I have mentioned this friend of mine a bunch of times within the past year. She suffered some trauma (illness and death of a loved one) and became mentally ill, or a better description might be mentally ill with noticeable symptoms. She has become a hypochondriac and is convinced she has an obscure syndrome with many symptoms. That’s not really the issue. The issue is that she has become unpleasant to be around in a way that she never used to be.

She is argumentative and she will get annoyed and loud with someone who she does not agree with. If I am resistant to see her, due to being busy, she calls me up and argues with me about how I should be more willing to get together. When I defend myself and say I don’t see my other good friends too often either, she tells me that they’re not sick, she’s sick, etc.

She is equally demanding of others, because they tell me she wants to go to their houses, lie in their bed and watch TV or other strange things. When I do see her, not only is she argumentative but she will text me the next day or two days later about something petty I said that upset her. For example, we were having a discussion and I talked about a term that not many people may know. I asked her “do you know what that is?” Two days later, she texted me that she was offended because she feels like when I asked her “do you know what that is” I’m implying that she’s stupid. It’s like we no longer see eye to eye, and we seem to not enjoy each other’s company.

Our other mutual friends say they hope the friend that we used to know returns (in other words, her symptoms are lessened and she becomes more pleasant). We’re all aware that may never happen.

I want to know, in the opinion of other Jellies, how tolerant would you be and how willing would you be to see a friend who has become argumentative and unpleasant to be around?