Hey Capriciousness. That sounds like a tough situation. I've lost a lot of friendships over the years, due to my own issues and also to constantly moving. Even if the relationship was problematic it can be hard to let go.

It sounds to me like distance from her is probably a good thing for you since she doesn't seem very understanding about your struggles. If she has trouble understanding the illness and isn't trying to learn more about it it seems like she could be a negative influence. Still, it always makes me sad to hear about a situation like this. Hang in there.