Mme Acarie also shared in two foundations of the day, that of the Oratory and that of the Ursulines. On 11 November 1611 she, with Vincent de Paul, assisted at the Mass of the installation of the Oratory of France. Among the many postulants whom Mme Acarie received for the Carmel, there were some who had no vocation, and she conceived the idea of getting them to undertake the education of young girls, and broached her plan to her holy cousin, Mme. de Sainte-Beuve. To establish the new Order, they brought Ursulines to Paris and adopted their rule and name.