article_snippet: Scroll down for video .
article_snippet: However, Erika Prins, a researcher at the Anne Frank House museum, has now revised the official date of her death having studied witness accounts, archives, and conducted at least one new interview.
article_snippet: Ms Prins said Ms Prins now believes that Anne and Ms Prins sister began exhibiting symptoms of typhus at the beginning of February.
article_snippet: Ms Prins Ms Prins added: 'It was horrible.
article_snippet: But the study shows Anne was months from safety (Anne pictured left, with father Otto, and right)
article_snippet: well, that's not true anymore.'
article_snippet: In the words of one witness, Rachel van Amerongen, who knew the Frank sisters and was cited by researchers, 'one day researchers simply weren't there anymore.'