not be given a royal title was shared by Queen Mary and George's wife, Queen Elizabeth (later the Queen Mother). At first, the British royal family did not accept Wallis and would not receive her formally, although the former king sometimes met his mother and siblings after his abdication. Some biographers have suggested that Wallis's sister-in-law Queen Elizabeth remained bitter towards her for her role in bringing George VI to the throne (which she may have seen as a factor in his early death) and for prematurely behaving as Edward's consort when she was his mistress. These claims were denied by Elizabeth's close friends, such as the Duke of Grafton, who wrote that she "never said anything nasty about the Duchess of Windsor, except to say she really hadn't got a clue what she was dealing with." Elizabeth was said to have referred to Wallis as "that woman", while Wallis referred to Queen Elizabeth as "Mrs. Temple" and "Cookie", alluding to her solid figure and fondness for food, and to her daughter Princess Elizabeth (later Queen Elizabeth II) as "Shirley", as in Shirley Temple. Wallis bitterly resented the denial of the royal title and the refusal of Edward's relatives to accept her as part of the family. Within the household of the Duke and Duchess, the style "Her Royal Highness" was used by those who were close to the couple. According to the wife of former British Union of Fascists leader Oswald Mosley, Diana Mitford, who knew both Queen Elizabeth and the Duchess of Windsor but was only friendly with the latter, Elizabeth's antipathy toward her sister-in-law may have resulted from jealousy. Lady Mosley wrote to her sister, the Duchess of Devonshire, after the death of the Duke of Windsor, "probably the theory of their [the Windsors'] contemporaries that Cake [a Mitford nickname for the Queen Mother] was rather in love with him [the Duke] (as a girl) & took second best, may account for much." Wallis and Edward lived in France in the pre-war years. In 1937, they made a high-profile visit to Germany and met Adolf Hitler at the Berghof, his Berchtesgaden retreat. After the visit, Hitler said of Wallis, "she would have made a good queen". The visit tended to corroborate the strong suspicions of many in government and society that Wallis was a German agent, a claim that she ridiculed in her letters to Edward. U.S.