Sorry to know of that scenario but I am, regrettably, not surprised. People can be harsh! (Gee....and 'they' say Autists aren't empathetic......hmmm).
Next scenario, related. In my former apartment (I moved last Oct.) my very nice/gentle neighbor is schizophrenic. I'll never forget what he told me: In high school he was quiet/shy but did have some friends and they'd go camping together and sometimes meet to watch a movie - the usual. Then, he began having symptoms, which he kept to himself. He successfully graduated from high school but his condition was progressing - he was hospitalized and diagnosed with schizophrenia.
This town is quite small so of course his 'friends' learned of his illness. They avoided him too. He was was never again invited to 'hang-out' with his buddies and none would even call him to say "I'm sorry, hope you're feeling better" or "I'm thinking of you, take care of yourself" or "Let me know if I can help." How cruel. My neighbor spent his time trying to recover, alone, and he suffers. Although I don't know him well I really admire him (and I've told him so). He's so sweet and his prognosis is good because he's a fighter and really bright. (IMO, far stronger than these 'friends').
Once he knocked on my door at 11 at night! Never had he done that - he was having a serious panic attack (with symptoms). He asked for nothing but stood at my door crying hard. I brought him hot tea (with plenty of spare bags) plus some reading materials and he said he felt much better. I suggested he could call his Auntie (his favorite person) - he did and she came right away. I checked on him the next day and he graciously thanked me.
Anyway, he told me, with regard to these 'friends,' that they are not a friend and cannot know the meaning of friendship. Further, these would not be the sort of people who are 'friend-material.' Indeed. What a bitter lesson but I entirely understand what he means.
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The ones who say “You can’t” and “You won’t” are probably the ones scared that you will. - Unknown