Simplify the following text for a Grade 7 native English-speaking person.
Original: Traudl Junge ( born Gertraud Humps ; 16 March 1920 -- 10 February 2002 ) was Adolf Hitler 's youngest personal private secretary , from December 1942 to April 1945 .
Simplified: Traudl Junge ( born Gertraud Humps 16 March 1920 -- 10 February 2002 ) was Adolf Hitler 's youngest private secretary . She was his secretary from December 1942 to April 1945 .