Betje Plukker was the daughter of Nathan Plukker and Christina Scheffer. Her parents divorced on 28 March 1939 and her father remarried in 1942 Femmy Crost and her mother in 1940 Johan Aldewereld. Since her parents divorced, Betje stayed at Johan van Soestdijkstraat 37 in Diemen. She has been killed in Auschwitz on 11 February 1944.
Amsterdam Municipal Archives; archive card of Nathan Plukker and Johan Aldewereld.