After her divorce, Edith continued to visit the United States to retain her American citizenship, even though she chose to live permanently in France. During World War I, Edith established two organizations for war refugees: the Children of Flanders and the American Hostel for Refugees. She also made several visits to the French front where she distributed medical supplies and made observations from which she wrote war essays influencing Americans to support the Allied cause. Edith's war essays appeared in the book, Fighting France, from Dunkerque to Belfort (1915). As a fund-raiser she organized The Book of the Homeless (1916), an illustrated anthology of war writings by well-known authors and artists of the time. Edith won the French Legion of Honor and was awarded many decorations by the French and Belgian governments for her contributions to charity. She continued her charitable efforts after the war by providing aid to tubercular patients in France.
In 1919, Edith purchased two homes in France: the chateau Ste. Claire in Hyeres, and the Pavillon Colombe, located north of Paris. Both homes had elaborate gardens where Edith immersed herself. Because she felt as though she had been cut off from the life she knew before the war, she was anxious to re-establish friendships and stability. She began entertaining well-known literary personalities such as Walter Berry, Robert Norton, Percy Lubbock, Paul Bourget, and of course, her close friend Henry James.
Edith continued to write until her death in Hyeres, France on August 11, 1937 at the age of 75. She was buried in a cemetery at Versailles in France. All of Edith's papers and unfinished work were given to Yale University with the stipulation that certain of them not be released until 1968.
