Sister in law

T

I have a sister in law that I haven’t had a healthy relationship with. She very toxic to me and to my husbands relationship. She’s said some things that I can’t get over. It’s been almost twenty years and I just can’t anymore. Is it wrong to never talk to her again and avoid her at all costs including staying away for holidays?? It’s been pretty cool actually. I don’t have the stress and anxiety that she causes