She published biographies of several important historical figures, translated major historical/literary documents into French from Spanish, and wrote a novel.

She spent part of her childhood and youth in Chile, where her father settled in 1906 to participate in the country's reconstruction after a devastating earthquake.

[2] Returning to France in 1923, she married the writer Jean Prévost (m. April 28, 1926), with whom she had three children (Michel, Françoise, and Alain).

[5] She also published biographies of Spanish poet and playwright Federico García Lorca, whom she knew personally (1968),[6][7] and of the early 20th century pro-peace French socialist Jean Jaurès (1954).

[18] At age 78, five years before her death, Auclair published an autobiographical work with her daughter, actress Françoise Prévost.