Family Member Trigger

My husband has a really big family (there are 7 siblings total) and for the most part, they are great! However, I have one sister in law that is a huge trigger for my anxiety/depression. It’s literally gotten so bad that I have to leave whenever she comes to anywhere we are or I avoid going places I know she’ll be at. Yes, there are reasons behind it but I’m not here to trash her name. Does anyone else struggle with this with a family member or in law and how do you deal with it?