When her husband died in 1613, his widow settled her affairs and begged leave to enter the Carmel, asking as a favour to be received as a secular sister in the poorest community. In 1614 she withdrew to the monastery of Amiens, taking the name of Marie of the Incarnation. Her three daughters had preceded her into the cloister, and one of them, Margaret of the Blessed Sacrament, was sub-prioress at Amiens. She made her solemn profession on April 8, 1615, in the course of a prolonged sickness. In 1616, for reasons of health, she was sent to the Carmelite convent at Pontoise, where she died at the age of fifty-two.