Greta is a stern mother to Helge; when he arrives home muddy one day in 1953, she forces him to disrobe in the entrance hall of the grand Doppler residence. After Helge goes missing, she implies to Noah that Bernd is not Helge's father.
When a physically and emotionally scarred Helge returns months later, on June 23, 1954, she kneels before him, touching him to be sure he is real, and thanking God for returning him. He does not speak or otherwise respond to her, however, and soon she has returned to her cold treatment, scolding him for not answering Egon Tiedemann's questioning. She complains about him to Noah later, saying she is frightened by him, and wonders if he is possessed by the devil, but Helge embraces Noah, and reads a Bible passage aloud when bid.