Helena Granaat worked as a student nurse in the Apeldoornse Bos, where she started working on 29 November 1942.
Municipal Archives Apeldoorn, list of employees of the Apeldoornsche Bosch
Presumable this person is commemorated on a memorial in Vierhouten. More information on this memorial can be found (in Dutch) on the website of the Nationaal Comité 4 en 5 mei.