During the war years, Eldershaw documented cases in which police raids on individuals and left-wing organisations resulted in the confiscation of property, arguing that writers must have "in their libraries all shades of opinion as tools of the trade". She strongly supported the FAW's pro-Soviet stance and, with Katharine Susannah Prichard, Miles Franklin and Frank Dalby Davison, was invited to speak at the Cultural Conference of the NSW Aid Russia Committee. As FAW President in 1943, she conveyed a message of support for Soviet writers to the Soviet Consul in Canberra.