Unity Mitford summered at the Berghof where she continued to discuss a possible German-British alliance with Hitler, going so far as to supply lists of potential supporters and enemies. At the 1939 Bayreuth Festival, Hitler warned Unity and her sister Diana that war with Britain was inevitable within weeks and they should return home. Diana returned to England, while Unity chose to remain in Germany, though her family sent pleas for her to come home. After Britain's declaration of war on Germany on 3 September 1939, Unity was distraught. Diana Mitford told an interviewer in 1999: "She told me that if there
Diana Mitford but were barred from all functions at the British Embassy. During their time in France, the Mosleys quietly went through another marriage ceremony; Hitler had safeguarded their original marriage licence, and it was never found after the war. During this period, Mosley was unfaithful to Diana, but she found for the most part that she was able to learn to keep herself from getting too upset regarding his adulterous habits. The only time she and sister Jessica communicated with each other following their estrangement was when they were both taking care of their sister Nancy. Nancy was at Versailles, and