William R. Krom died on November 19, 1891 in the town of Olive, Ulster, New York and my research so far indicates that Sarah Ann would have gone to live with one of her children, most likely the eldest, Peter Jacob Krom.
In 1920, Sarah Ann Christiana is shown living in Marbletown with the family of her daughter Sarah Eliza Krom who married Leonard Wynkoop about 1915. Sarah Eliza was almost 40 years of age and this was Leonard's second marriage (he had married Mary Barley about 1876 and Mary passed away sometime after the 1910 US Federal Census). Since Sarah Ann Christiana died on February 26, 1926 in Gardiner, Ulster, New York, I should be able to locate her in both the 1900 and 1910 US Federal Census reports, correct?
Well so far my efforts on Ancestry have not been fruitful so my next steps will be working with Family Search and barring that perhaps I will even go through all the Marbletown entries for 1900 and 1910 via Ancestry. My "hunch" is that Sarah Ann Christiana did not stray very far while her eldest son Peter Jacob Krom did die in Ravenna, Albany, New York in 1948, for the 1910 Census he was still located nearby in Forestburgh, Sullivan, New York.
I will also work on going through all the Krom children including Louisa Jane Krom, Alice D. Krom, Walter Krom, Dora Krom, Lucinda Krom and Loretta Krom.