Elizabeth Mary Mullin 1910 (Mrs. John C. Sullivan)
Address in 1937: 81 1/2 Summit St Central Falls RI
teacher 1910 Valley Falls RI
husband died 1931
Elizabeth Mullin and Edith Osgood both lived in 18 Rockefeller, according to the 1907-08 MHC directory. It looks like Elizabeth had a sister at MHC that year as well, also according to the 1907-08 MHC directory, rooming in 50 Porter. And check those married names; did they end up marrying brothers?
All information from One Hundred Year Biographical Directory of Mount Holyoke College 1837-1937, Bulletin Series 30, no. 5; published and compiled by the Alumnae Association of Mount Holyoke College, South Hadley, Massachusetts