I argued with my sister-in-law about a year ago. According to my husband, she is the "favorite" sister-in-law married to the "favorite" brother. There was some tension for a while, but we mended it months ago. She deliberately planned a party for her daughter on a day I had already planned a huge milestone birthday for my husband. I thought it was tacky and hurtful and I told her so. She ignored me completely (including a card with my apology and flowers I brought over) for months. It seems that from that point, the family started distancing themselves from me. Just recently, however, I have gotten some real signs that I am very disliked: Messages I leave on voicemail are not returned, two members have unfriended me on Facebook, when my husband and I sit down at a table at a family event, others get up and move away, gatherings are held without us, etc. I thought this argument between my SIL was just between the two of us and over and done with. I don't know what has precipitated this newest onslaught of pettiness. It is hurtful and I spend a lot of time wondering if it is worth it to try to fix things.