My son's MIL-to-be (they're getting married in June) is completely outspoken, bullish, controlling and downright rude - obviously, I do not like her! But that is beside the point. The point is that she has demanded that I watch my 3-year old DGD at the upcoming wedding (which I don't mind doing, seeing as he's a lamb and I love her to pieces) and has also made it clear in front of all of the family members that she 'expects' that I will NOT even have a glass of champagne to toast at my son's wedding. I don't drink, so in her logic I should be the one to watch my GD and should not even have a sip of champers. She also demands, as MOTB, that she be allowed to choose her "colours" for her outfit before I purchase mine, basically listing all of the colours of the rainbow that I should 'avoid' until she makes her choice. I told her that I'd wait until she decided and then buy a dress afterwards, but as the wedding is in June, I have a feeling she will leave it very late just to be awkward. AIBU if I just tell her, politely, to bog off? 