I seem to recall older Jewish women family members of my late NYC-born partner Lenny telling me there was some overlap between membership in the Hadassah and the YWCA. During the 30s and 40s, Hadassah was very much ahead of its time in terms of feminism and women's empowerment. So if there's any possibility that Eddie was Jewish, writing to Hadassah to ask if they have record of her might be worth a shot.