"Greenleaf" is a short story by Flannery O'Connor published in 1956 in The Kenyon Review, and later appeared in her short story collection Everything That Rises Must Converge that was published in 1965 after her death in August 1964.
Mrs. May, however, has a somewhat smug morality based upon outward success, while Mrs. Greenleaf secretly practices faith healing and recognizes herself as a sinner.
The Greenleafs' twin sons are decorated World War II veterans who both own farms.
Considered successful, they are married to French women whom they met during the war, and they each have three children.
After becoming impatient, Mrs. May honks the car horn, and the bull runs out of the woods, goring her in the heart just as Mr. Greenleaf reappears.