Conceivably, Olga was initially either open to the possibility that Anderson was Anastasia or unable to make up her mind. Anderson's biographer and supporter Peter Kurth claimed that Olga wrote to the Danish ambassador, Herluf Zahle, at the end of October 1925: "My feeling is that she is not the one she believes—but one can't say she is not as a fact". Within a month she had made up her mind. She wrote to a friend, "There is no resemblance, and she is undoubtedly not A." Olga sent Anderson a scarf and five letters, which were used by Anderson's supporters to claim that Olga recognized Anderson as Anastasia. Olga later said she sent the gift and letters "out of pity", and called the claims "a complete fabrication". When Olga refused to recognize Anderson as Anastasia publicly and published a statement denying any resemblance in a Danish newspaper, Anderson's supporters, Harriet von Rathlef and Gleb Botkin, claimed that Olga was acting on instructions received from her sister Xenia by telegram, which Olga denied in private letters and sworn testimony. She told her official biographer, "I never received any such telegram." The telegram was never produced by Anderson's supporters, and it has never been found among any of the papers relating to the case. Xenia said,