What about the girls ? They've always loved that party and I know they want to go...
If d-15 goes, there may be another argument (that's where they had one before) I think d-15 feels kinda safe; that her aunt (w's sister) would keep w from beating her in anger. I don't know that that's necessarily true, however, if she gets disrespectful. d-15 told me the last argument she kept her distance so her mom couldn't grab her.
M:48 W:35 S:16 D:15 D:10 Md: 12 & 1/2 years bomb: Jan 8 ? she moved out about then also Moved in w/OM soon after