Hello Jim, unfortunately, her death notice in the NY Times only mentions husband and children:
NY Times Oct 24, 1938; page 17 COLBERT - On Oct 22, 1938, Margaret, beloved wife of the late Maurice C., mother of Maurice J., Mrs. Mae C. Liotta, and Walter D. Funeral from her late residence, 313 East 58th St., New York City, Tuesday, 9:30 A.M. Requiem Mass, Church of St. John the Evangelist, 55th St. and 1st Ave., 10 o'clock. Interment Gate of Heaven.
As you know, the place of birth for parents is sometimes found on the marriage certificates of their children so I suppose you have already checked that angle? If not, Mae Colbert was married to Dr. Matthew A. Liotta in 1919, they cohabitated for 6 weeks then they separated. Their eventual divorce was covered in the Buffalo Courier Express, June 16, 1935.