RORY: Eventually, maybe, but for now – solidarity, sister.
LORELAI: Ya ya!
RORY: You’ve been waiting for six weeks to do that, haven’t you?
A reference to Divine Secrets of the Ya-Ya Sisterhood. The 1996 novel by Rebecca Wells has already been discussed as one that Rory (probably) read, but the comedy-drama film came out in June 2002, and it is undoubtedly this version which Lorelai has recently seen and refers to.
Divine Secrets of the Ya-Ya Sisterhood is directed by Callie Khouri, and stars Sandra Bullock and Ellen Burstyn as the daughter and mother in conflict. The film was a commercial success, but received mixed reviews, with critics feeling it was overly melodramatic and unoriginal.
Rory indicates that she hasn’t spoken to her father all summer, and for a while at least, she is going to continue ignoring Christopher to support Lorelai.
The Annotated Gilmore Girls 