She may have been Caroline Cobb Andrews, born December 24, 1836 at Lisbon, Maine, daughter of Ephraim Andrews and Elizabeth Ingram (Fulton) Andrews. It appears that Caroline never married. She's buried with her parents and other relatives in the Lisbon Center Cemetery at Lisbon, Maine.
If you recognize the Caroline Andrews in the photograph from your family research, please leave a comment or contact me directly.
Sources: U.S. Federal Censuses; Find-a-Grave; Maine, J. Gary Nichols Cemetery Collection, ca. 1780-1999