When Lorelai looks around the club for a table, she is appalled to see her mother has already saved them one. Lorelai didn’t invite Michel to her bachelorette party – Sookie invited him – and now Michel has invited Lorelai’s mother, who he adores, because he “thought it would be a kick”.
Emily, apart from giving Lorelai a brief lecture about being late to her own bachelorette party, seems to be very happy to be allowed to join in the fun for a change. Although she looks slightly uncomfortable at first, she is unfazed by the drag club, and able to adjust to almost any social environment through sheer force of will.
Emily does question Rory’s appearance at a bar that is 18 and over, but isn’t angry or upset about it. This seems really unbelievable, except that we know Emily firmly believes that you don’t get into arguments or explanations at social events. Her own rules of etiquette seem to insist that she go along with it, however implausibly.
The Annotated Gilmore Girls 