Weustenfeld was thoroughly acquainted with the German espionage system and delivered funds to Duquesne which she had received from Lilly Stein, her close friend.
Weustenfeld war gut mit dem deutschen Spionagesystem vertraut und ihre Aufgabe war die Weiterreichung von Geldern an Duquesne, welche sie von ihrer engen Freundin Lilly Stein erhielt.