Career
She appeared in Edward and Caroline (1951), Je sais rien, mais je dirai tout (1973), and Tanguy (2001). Duc played the role of Mahaut, Countess of Artois in the 1972 miniseries Les Rois maudits, and later played Marguerite de Bouville in the 2005 adaptation of the same novels. In 1983, she performed at the Théâtre de la Gaîté-Montparnasse in a production of Chienne Dactylographe.
Duc was married to René Catroux, with whom she had two daughters.