She became acquainted at this point with George Perle, whom she married in 1940; in 1942 the couple joined the Socialist Workers Party, and she took the pseudonym "Laura Gray".
These drawings, which have been compared to the work of Boardman Robinson, Hugo Gellert, and Robert Minor, would be published in Trotskyist publications around the world.
[2] Slobe and Perle moved to New York City after World War II, divorcing in 1952 but remaining close.
Always fragile in health – she lived with tuberculosis from early in her life and in 1947 further suffered the removal of a lung – she contracted pneumonia that rapidly turned fatal, killing her at the age of 49.
[3] A sculpture prize was established in her honor at the Art Institute of Chicago after her death,[4] and Perle composed a Quintet for Strings in her memory.