Many, including Hays herself, believed that Hamilton composed the anonymously published Memoirs of Modern Philosophers (1800) to satirize London's radical circle in general, and author Mary Hays in particular. Hamilton's other novels include Translation of the Letters of a Hindoo Rajah (1796) and The Cottagers of Glenburnie (1808). She also authored several biographies, including Memoirs of the Life of Agrippina, Wife of Germanicus (1804). She was respected as well for her educational and conduct literature, the most prominent of which are her Letters on the Principles of Education (1801) and Letters Addressed to the Daughter of a Nobleman (1806).