I know that her husband, John B. Aubry, was still alive but is there a remote possibility that this was the death of his first wife, Mary Aubrey, in 1910.
NY City Deaths
Aubrey Mary, 39 y, Apr 23 1910, cert # 13920, Manhattan
New York, New York City Municipal Deaths
Reference ID #13920
Name Mary Aubrey
Event Type Death
Event Date 23 Apr 1910
Event Place Manhattan, New York, New York, United States
Address 405 East 92nd Street
Residence Place New York, New York
Age Bellevue Hospital (sic)
Marital Status Widowed
Father's Name Charles
Father's Birthplace U.S.
Mother's Name Nellie
Mother's Birthplace U.S.
Citing this Record: "New York, New York City Municipal Deaths, 1795-1949," database, FamilySearch"