In the summer of 1902, at the urging of his wife Aleksandra, Trotsky escaped from Siberia hidden in a load of hay on a wagon. Aleksandra later escaped from Siberia with their daughters. Both daughters married, and Zinaida had children, but the daughters died before their parents. Nina Nevelson died from tuberculosis in 1928, cared for in her last months by her older sister. Zinaida Volkova followed her father into exile in Berlin, taking her son by her second marriage but leaving behind a daughter in Russia. Suffering also from tuberculosis and depression, Zinaida committed suicide in 1933. Aleksandra disappeared in 1935 during the Great Purges in the Soviet Union under Stalin and was murdered by Stalinist forces three years later.