Debora Appel went to school at the Vossius Gymnasium in Amsterdam. There she took history and Dutch by a teacher whom she married later on.
Addition of a visitor of the website.
More information (in Duch) about Debora Suzanna Appel can be found in N. van der Zee, Jacques Presser. Het gelijk van de twijfel, een biografie (Soesterberg 2002).