 In 1901 she established a nursing home in a small hamlet of Westchester County, some twenty miles north of New York City.Rosary Hill Home, as it was named, was formally opened to both male and female patients on June 5, 1901.Mother Mary Alphonsa lived at Rosary Hill for the rest of her life and rarely left, even declining an invitation from Harriett Lothrop to participate in a centennial celebration for her father at their former home The Wayside in Concord, Massachusetts.