“Another survivor of Bergen-Belsen, a young girl who knew Anne, commented, "There it took superhuman effort to remain alive. Typhus and debilitation-well, yes. But I feel certain that Anne died of her sister's death. Dying is so frightfully easy for anyone left alone in a concentration camp.” Concentration CampsAnne Frank Diary Book:The Betrayal of Anne Frank: A Cold Case Investigation Source: The Betrayal of Anne Frank: A Cold Case Investigation