Sage did fewer new paintings after Tanguy died, partly because of her depression and partly because of her decreasing eyesight due to cataracts. Instead, she devoted her time to two projects: preserving Tanguy's reputation through retrospective shows and a complete catalogue of his work, and writing poetry, mostly in the slangy French she had learned in her youth and spoken with Tanguy. With the help of longtime friend Marcel Duhamel—and her own subsidies to cover most of the printing costs—Sage arranged for a book of this poetry, "Demain, Monsieur Silber," to be published in France in June 1957. Around 1955 she also wrote a partial autobiography, "China Eggs," which covered her life up to about the time she left San Faustino, but she never tried to publish it.