Presumably Mrs. Cowdin lived in Alabama. Her novel begins in the South, but is most interested in exposing the North as a place where "fiendish" ministers scheme against "Southern wealth" and vicious women treat white servants more harshly than any black slave is treated in the South. The story of a Northerner who marries a Southerner, then deserts her and their daughter Ellen in the North in order to carry dangerous abolitionist designs back into the South, the novel is less interested in defending slavery as an institution than it is in demonizing "Parson Blake," an abolitionist minister. In the end Ellen, the white woman, has to be saved from his evil machinations and desires.
Nothing is known about the novel's reception, but the stamp at the bottom of the titlepage below -- from the copy displayed at the Wright Fiction site -- tells us that at least one copy of the book was actually sold in Boston.
Ellen; or, The Fanatic's Daughter
By Mrs. V. G. Cowdin
(Mobile: S. H. Goetzel & Company, 1860)