In 1248, Blanche again became regent, during Louis IX's absence on the Crusade, a project which she had strongly opposed. In the disasters which followed she maintained peace, while draining the land of men and money to aid her son in the East. She fell ill at Melun in November 1252, and was taken to Paris, but lived only a few days. She was buried at Maubuisson Abbey, which she had founded herself. Louis heard of her death in the following spring and reportedly did not speak to anyone for two days afterwards.