Tziona Levin was the closest thing Gabriel Allon had to a sibling; she cared for him when his mother was ill.
Tziona kept Irene's paintings for Gabriel. When he was seeking information about Erich Radek, she opened her storeroom.
Gabriel and Chiara visited Tziona with Madeline Hart while they were trying to convince her to remain in Israel. Gabriel learned that Tziona had kept his mother's paintings despite his having told her to destroy them.