She married Henry Cruger.
She built a limestone mansion at Herkimer County, NY, called 'Gelston Castle' or 'Henderson Home' (named after her great grand father, Dr John Henderson). She was widely traveled, with friendships among the literary celebrities of her day. She had Scottish ancestors, and she probably met AMW through Ann Maxwell (1784-1867). AMW visited Harriet's home frequently.
Information from Susan R. Perkins, Herkimer County Historical Society, Herkimer, NY.