My family is trying to kill me through "exposure therapy"

So I've(15F) only recently found out that I'm not insane, and that this is a real thing, so I told my fmaily! Prior to that, they thought that I would randomly crash out for no reason?? Despite the fact that I always told them why I was reacting the way I do. They allowed me to wearing noise cancelling headphones during mealtimes and stuff, until one day they couldn't handle my existence and my eldest sister proposed the idea of exposure therapy. Once I gave this disorder a name, according to them my symptoms got worse. I personally think that they're only noticing them now, because I've been the same. They even called this like a victim complex. Anyway, my sister took my headphones away from me and now I have to deal with at least one meal a day with my family with parents that eat like swines and a brother that purposefully tries to trigger me. Hey, if it's been like 5 years and I haven't "gotten better" or "gotten over this" how am I supposed to now? I'm not crazy, right? Because this does NOT go away.

I love my family by the way, but I'm like 75% convinced that they hate me and want me dead because the only reason they keep me around is because, "if [I] kms then [they]'d be traumatized for life so the only thing [they] can do is cope." I don't feel safe here but I don't know what I can do.

Update: Thank you for all of the replies and support!! 🫶 But, oh lord, I tried to talk to them about it, and they pulled up random BS articles about how it works. Then they told me that misophonia is a phobia and that's why they're doing this?? I talked to my friends (that don't have misophonia btw) about this and they also think that this is absurd. I'll wait for my family to calm down a little and I will try again. Once again, thank you everyone!