In S1E17, Rory tells Lorelai that she’s going to Madeline’s “Chilton party.” Lorelai says, “Honey, why don’t you just stay home and read ‘The Bell Jar?’ Same effect!”
“The Bell Jar” is a novel by Sylvia Plath, published in 1963. It was her only novel, and it is generally understood to be semi-autobiographical. The novel describes the beginnings of the writing career of a woman named Esther, and her struggles with mental illness. In the book, Esther’s health improves after an inpatient hospital stay, although in reality, Plath died from suicide shortly after the novel was published.