First time poster on AIBU thread, so I may waffle/bore. I feel terribly trivial BUT...DS's 13th birthday. He requested a small family gathering with his dearly loved GPs and siblings/cousins. I went to a great deal of trouble with masses of home cooked food, as did DM. Work full time and although have a (D?)P, do all the chores with several kids living at home. Anyway, P's M (I call her MIL) arrived with her miserable git husband and friend who was driving her (she almost always drives miserable git about so she was feeling free and easy, bless her). Proceeds to neck 2 large glasses of wine at speed and half an hour later is vomitting copiously onto outside furniture, decking, later into a receptacle, then all night onto small daughters bunk bed - she had to stay the night as too incapacitated to be a passenger in a car. This has happened twice before. I drink rather a lot and have boisterous parties, so try not to judge decadent behaviour BUT - had gone to a great deal of trouble, and was very worried that newly teenage son would be upset as all the attention revolved around her (he didn't seem to mind) and that the other kids would find it disturbing. I was concerned that she had puked on my little girl's bed (she and middle son slept with me fidgetty). The other adult guests were caught up in looking after her, while I entertained the kids and served food, and waited on the misogynistic miserable git. Also - surely if you are someone who is a puker when drunk, you would've learnt your lesson by 70? My biggest bit of resentment is that...she hasn't bloody apologised! I would instantly send an apology (and be mortified) if I thought I may have been slightly out of line due to excessive indulgence in the grape. She is not a kindred spirit and often criticises me in every way, including how much I drink, so I may be being overly critical