First call the cemeteries and ask if she is there in an unmarkled grave.
You now have her exact date of death and her death certificate #. You best bet and only hope is to order a copy fron the Health Department and hope the cemetery is listed.
in the New York, Death Index, 1880-1956
View New York, Death Index, 1880-1956
Add alternate information
Name: Katherine Kuczinski
Death Date: 12 Apr 1901
Death Place: Pomfret, New York, USA
Certificate Number: 17115