She was a relative of the famous Madame de Rambouillet and had been raised in a convent where she was placed against her will by her father because of what he considered to be immoral behavior.
[1] Described as pox marked but with great charm and a somewhat coarse humor, literary connections and excellent Spanish, she was also expected to be able to amuse and befriend queen Anne and become her confidant.
[1] Madeleine du Fargis did in fact very swiftly become a personal friend, trusted confidant and favorite of the queen.
[1] du Fargis left for Brussels, where her spouse had sided with the king's brother Gaston, Duke of Orléans against the monarch, and engaged in an illegal secret correspondence with Queen Anne.
[1] She could resume her correspondence with Madeleine du Fargis as well as with Marie de Rohan, who both acted as her agents, received money from her and channeled her letters to other contacts.