[2] During this time, Zenia's father committed suicide so that his wife and daughter could get his food rations; it was Rosenfarb who discovered the body.

[4] After the liquidation of the ghetto, Zenia was deported to the Auschwitz concentration camp, and then moved to Bergen-Belsen, where she was liberated in April 1945.

[2] In 1960, Larsson made her debut as a writer with the autobiographical novel Skuggorna vid träbron,[2] in which she described the experience of World War II from the point of view of her alter ego, a girl named Paula Levin.

[2][4] Larsson's literary output includes a number of novels, short stories, essays and radio plays.

[2] She also published her letters to Chava Rosenfarb in a collection entitled Brev Fran En Ny Verk Lighet (1972).