RORY: Do you need a book?
LORELAI: Um, that Colette biography.
RORY: I lost your place in it.
LORELAI: That’s okay. I have to start over anyway.
Rory is referring to Secrets of the Flesh: A Life of Colette by Judith Thurman, previously discussed as a book Rory was reading. We now learn it was actually Lorelai’s book, and Rory borrowed it.