When hostilities broke out between England and France in 1293, Edmund and Blanche left Paris and moved to England. They returned to France in 1296 but resided in King Edward's continental possessions, where Edmund served as lieutenant of Gascony. Blanche was widowed again in June the same year when Edmund died during the siege of Bordeaux. She returned to her brother-in-law's court in November but did not stay in England for long. She received her dower, consisting of one third of all of Edmund's lands and all his rights in the earldom of Ferrers, and in 1298 she was back in France. She founded a Franciscan abbey in Nogent-l'Artaud in 1299, dedicated to Saint Louis IX of France, and declared her wish to be buried there rather than with her second husband in London or with her first husband in Provins. Queen Blanche's body is buried at the Cordeliers Convent in Paris, where her daughter was later buried beside her.