Although Beach closed her store during the
German Occupation, Monnier remained open and continued to provide books and solace to Parisian readers. For ten years after the war Adrienne Monnier continued her work as an essayist, translator and bookseller. Plagued by ill health, Monnier was diagnosed in September 1954 with
Ménière's disease, a disorder of the inner ear which affects balance and hearing. Further, she also suffered from delusions. On 19 June 1955, she committed suicide by taking an overdose of sleeping pills.