Otto Frank was the only one to survive out of the eight people who went into hiding. When he returned to Amsterdam he was given Anne's diary by Miep Gies, which he later published as a remembrance to her. Along with Anne, Margot Frank also wrote a diary during their time in hiding (Anne mentioned her sister's diary in her own) but Margot's diary was never found. However, many authors wrote fan-based diaries of Margot such as the novel "The Silent Sister" by Mazal Alouf-Mizrahi. Letters written by both Frank sisters to American pen pals were published in 2003. Buddy Elias (1925–2015) was Anne's first cousin and last surviving close relative.