Kurshan was raised on Long Island as the daughter of a Conservative rabbi and an executive at UJA-Federation of New York.
She graduated from Huntington High School, Harvard College, and Cambridge University, where she studied the History of Science and English Literature.
She worked as an editor and literary agent in New York before moving to Jerusalem with her first husband for his rabbinic studies.
Although her first marriage crumbled, Kurshan stayed in Jerusalem, working as a translator and foreign-rights agent.
In her memoir, she describes how she found a lifeline in the Daf Yomi, the daily study of the Babylonian Talmud, applying its richness to her life as first a single woman, and then as a remarried wife and mother.