What do you do when you are hosting a gathering for your daughter's milestone (high school graduation) and you find out the relative that has been ghosting your family for 6 years decides she's coming? This woman is my rude, toxic sister in law who I've posted about on here before. She attacked me and when I stood up for myself (6 years ago) she cut off all communication with my family (including my daughter). My daughter barely knows her. But I just found out, for some odd reason, she is coming to the graduation. She is married to my husband's brother and has had very little to do with us since 1998. Who does this woman think she is? I didn't address the invitation to her and told my husband she's not invited. My husband said to just let it go. But you don't just waltz into a family gathering with family you haven't spoken to since 2017. This woman has some brass you-know-whats!! But mine are brassier! how do you deal with someone like this? I now have to try my level best to not let my anger show and ruin the occasion for my daughter, even though my daughter will probably be equally horrified that she's coming. I don't understand people like this or how to deal with them. Anyone have any suggestions?