In January 1940, Jankiel Najman was released and the couple tried to arrange for their emigration to Palestine. Only Jankiel managed to obtain permission to emigrate in May 1940. Gertrude tried to flee to Yugoslavia via Austria in July 1940 but was arrested. She finally made it to Zagreb and from there to the Serbian Jewish reception camp in Kladovo where she waited to be smuggled on board the ships that stopped on their way to Italy. Other refugees grew impatient and a mutiny broke out, which led to the refugees being moved to Sabac. She became a prisoner when the camp was turned into a concentration camp with the occupation of the area by Nazi soldiers in April 1941. In January 1942, she and the other inmates were transferred to Semlin concentration camp. She was able to leave the camp in May 1942. Gertrude went to Belgrade where she eventually found work as domestic servant for a family. She worked without a salary until they moved away because of the bombings on Belgrade. Gertrude remained in Belgrade until the end of the war. In July 1945, she obtained permission to fly to Italy to the United Nations Relief and Rehabilitation Administration camp at Bari. There she discovered that her husband had stayed at an internment camp in Ferramonti di Tarsia, Italy, until he was able to travel to Haifa in 1944. Gertrude arrived in Haifa in November 1945. The couple appear to have returned to Berlin by the 1950s.

Eva served in the British Auxiliary Territorial Service. After the Second World War she became naturalised and worked as an artist in London. She got married to Henry Mills. Gertrude's mother, Berta Linde (née Gronert) died in 1946 in Berlin.