Accompanying George, who was by then chasing fast planes – in addition to his numerous women – Marthe flew everywhere: the United Kingdom (she counted among her friends the Duke of Devonshire Edward Cavendish, the Duke of Sutherland George, Vita Sackville-West, Philip Sassoon, Enid Bagnold, Violet Trefusis, Lady Leslie and Rothschild family members), Belgium, Italy (where she met Benito Mussolini in 1936), the Italian colony of Tripolitania (Libya), Istanbul, the United States (in 1934, as guests of Franklin D. Roosevelt and his wife Eleanor), Ragusa, Belgrade and Athens.