The suggestion to try fultonhistory.com for an obituary is a good one. I didn't find one taking a quick look, but she may have been listed as Mrs. (Husband's Name). Also, there is an Elizabeth Quinn 1825-8/10/1884 buried in St Agnes Cemetery, Menands, NY (Albany suburb) on Find-A-Grave. If the year of birth is correct, she may be too young to be your Elizabeth, but it might be worth a call to the cemetery to see what they have on this woman if only to narrow your search. Good luck.