i'm using a throwaway because my husband knows my main account. My husband (32M) and i (29F) host most family gatherings at our home because we have the biggest place. His sister (26F) has high-functioning autism, and while I've always tried to be understanding, it's becoming a real issue.Last weekend, we hosted a dinner party for my promotion. His sister showed up wearing noise-canceling headphones the entire time, refused to make eye contact with anyone, and when my boss tried to make conversation, she bluntly told him his cologne was "offensively strong" and walked away.My husband always says, "That's just how she processes things," but I find it embarrassing. My boss later asked if she was "okay," and I could tell he was uncomfortable.After the party, I told my husband I think it's best if his sister doesn't attend our more formal gatherings. I suggested she could come to casual family-only events, but professional dinners and parties with my colleagues should be off-limits.He completely lost it, saying I'm discriminating against her and that I don't understand what it's like to live with autism. He thinks she deserves to be included in everything, regardless of how she behaves.I tried explaining that I'm not excluding her because of her autism, but because her behavior can be disruptive and sometimes inappropriate. I don't think it's fair that every event has to revolve around her needs.My husband hasn't spoken to me properly in three days, and his parents called to say I'm being ableist. But I feel like I'm making a reasonable compromise.AITA for wanting some events to be sister-in-law free?