This is the book Rory is reading on the couch when Lorelai gets home from the fashion show.
Memoirs of a Dutiful Daughter is a 1958 memoir by French author, existentialist philosopher, and feminist, Simone de Beauvoir, previously mentioned. It’s a beautifully-written, intimate portrait of her life growing up in a privileged, sheltered, upper middle class French family, rebelling as an adolescent against their conventions, and striking out on her own with intellectual ambition and a ceaselessly questioning, philosophical mind.
Rory often reads Lorelai’s books (they both have an interest in female biography and memoir), and this feels like one Lorelai would have been drawn to. She and de Beauvoir both had the same urge to escape a wealthy, claustrophobic background (Lorelai had Rory as part of her escape, while de Beauvoir had Sartre), and Lorelai spoke of always wishing she could use the word existentialist in a sentence.
The title of the memoir is ironic, but Rory really is a very dutiful daughter to Lorelai. Later on, she too will rebel against her mother.