Her Wikipedia article is here. She is shown holding a portrait of Mme. Maintenon.
From picgarden.net/media-BxFHvXbAXLY/.jpg. Also posted to the End of the Era - 1684 to 1715 Album.
The Duchess wears a leather Swiss belt that was fashionable in the early 1700s and a relatively small amount of jewelry.
Keywords: Françoise Charlotte d'Aubigné, Françoise Charlotte Amable d'Aubigné, duchesse de Noailles, Duchess of Noailles, d'Aubigné family, Noailles family, French, curly coiffure, fitted bodice, vee décolletage, lace bertha, brooch, drapery, elbow length full upper sleeves, clasps, three quarter length flared cuffs, lace engageantes, Swiss belt, vee waistline, close skirt, wrap