It appears she died on September 11, 1877 per her gravestone. We need help connecting her to the main Wikitree. The profile needs import clean up and more sources. She was the wife of Rev. George Henry Siver (1815 - 1891)
See her FindAGrave. The stone appears broken
Note: Their sons William and James served with the 106th New York Company A. During the U.S. Civil War. James died in the war and his widow married his brother William. It appears the other brother John Henry Siver (1839 - 1907) also served in the 106th N.Y. Co. A.
The database for U.S. Dutch Reformed Church Records in Selected States, 1639-1839, has a baptism for Eliza Ann, daughter of Henry Ostrander and Annyte Rilyia on August 13, 1812, at the Reformed Church of Caughnawaga in Fonda, New York. https://search.ancestry.com/cgi-bin/sse.dll?indiv=1&dbid=6961&h=2855555&tid=&pid=&queryId=c378350b59be6f42e3bf3af7b1e00910&usePUB=true&_phsrc=qcN39400&_phstart=successSource
If that's her, her father is https://www.wikitree.com/wiki/Ostrander-277, who appears to be connected.
Thank you Roger with your help I was able to merge the duplicates and get her connected