First time poster, long time lurker (remember LDC cake woman and PomBears etc, etc). De-lurking as want to know if IABU or not. Will try to be brief but don't want to drip feed.
My SIL has had a close friend since school, I'll call her Nicky. During the 11 years I have been with DH, Nicky has always been slightly offhand with me and also slightly with DH, for reasons unknown to us. As she has known SIL for so long, Nicky is often invited to family get togethers. As these are not all that often, DH and I have tended to just brush off the "offhandedness" for the sake of SIL, so as to not rock the boat.
Over the past few years, Nicky has become increasingly hostile to myself and now DH e.g. Making "jokey" passive aggressive comments, snubbing us etc. I raised this with my SIL when it came up in conversation about a year ago. She said that Nicky doesn't like my or DH as we have a family, which is what she wants. SIL said not to take it personally as Nicky hates everyone who isn't SIL or SIL's kids (including SIL's husband - she ate a peanut butter sandwich in their lounge knowing that he has a very severe nut allergy).
Nicky's brother and his wife are expecting a baby, and she is now acting unkindly to them too.
SIL said that the PA "jokes" are not jokes and are meant to be horrible. When I enquired as to why she was still friends with this person, SIL replied, "because if I'm not her friend, she has no one else". Also SIL's children are close to Nicky, which she says is a factor too.
Last night, BIL very nicely invited me, DH and DD to his birthday party. Nicky was in attendance, and VERY obviously ignored both myself and DH, but spoke happily to DD. I was tempted to ask her why she was being so rude, but thought it was neither the time or place. However, when talking on the phone today to MIL, who knows about this, I told her that me and DH had a chat last night. DH does not want to attend any further functions to which Nicky is invited, as he does not see why we should be subjected to rudeness. As he says, "the fact that she kicks everyone doesn't mean that being kicked doesn't hurt".
So AIBU to think that if you were SIL, you would have told supposed "friend" to sod off long ago? And that you would not want to see Nicky again, irrespective of how long she has been a family friend?