Complex sentence: Piaf was deemed as traitor and collaboratrice, however her secretary Andrée Bigard, a member of the Résistance spoke in her favour after the liberation.
Split into simpler sentences: Piaf was deemed as traitor and collaboratrice. The Life of Edith Piaf Carolyn Burke Chicago Review Press, 01.04.2012 However her secretary Andrée Bigard, a member of the Résistance spoke in her favour after the liberation.