In 1702 she went on a diplomatic errand to Charles XII of Sweden in his winter camp in Courland on behalf of Augustus, but her adventurous journey ended in failure. The countess, who was described by Voltaire as "the most famous woman of two centuries", died at Quedlinburg, aged sixty-five. Her namesake and great-great-granddaughter, Aurore Dupin, became the French novelist George Sand.
