Dumée was the author of Entretiens sur l’opinion de Copernic touchant la mobilité de la terre (Conversations on Copernicus’ Opinion on the Movement of the Earth), written in 1680.[6] Her work explains the Copernican system. The manuscript supported Copernican and Galilean theories on earth's movement, and the purpose of her writing was to discuss the reasons Copernicus himself used to defend his doctrines.[2][6] She also wrote on her observations of Venus and moons of Jupiter, which proved Copernicus and Galileo's theories.[7] The book was never published in entirety, but is known through an epitome in the Journal des sçavans. It was critically acclaimed and praised for its clarity.[1] She wrote during a time when the famous astronomers were object of violent and passionate attacks from several scientists.[8]