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
Education of the British royal family or heir to the throne had completed a university degree. Novelist Monica Ali described Charles's first wife, Diana, Princess of Wales, as being able to engage with the public on issues such as mental health in spite of her being "uneducated and intellectually insecure". Princess Michael of Kent has said that Diana struggled with praise on account of her difficult upbringing and because she "did not have much education". According to tapes released in 2004, Diana had said that her immediate family members told her she was "the thick one". Diana failed her O-level examinations (equivalent of a high school