My DP's brother's gf (who I'll refer to as SIL as it's easier) and I have not got on in the past. We've never argued it had a falling out but she's said things that have annoyed me and I've called her out on it which she hasn't liked.
Recently I extended an olive branch as DP has asked his brother to be his best man at our wedding. But now SIL has said something and it's ducked me right off!
We have a 1yo DD and when she stayed at DP's DF's house a few weeks ago, BIL and SIL went there to see her. Whilst there, FIL asked everyone to lower their recliners as DD kept banging her head on the corners. SIL didn't lift her head from her phone the entire time, despite DDd banging her head on SIL's recliner. When FIL asked SIL to stop ignoring DD and to put her recliner down. SIL did so with an attitude and FIL asked her what her problem was?
SIL responded that basically, she couldn't stand looking at DD as she looks so much like me and she doesn't care about any of us anyway (DP, DD and myself).
AIBU to be fuming about this? Hate me as much as you want but you don't take it out on an innocent baby!
This has only just got back to me and I don't know how to react. I'm supposed to be going out with SIL next weekend for DP's DS's birthday! 