What is the author's style in The Life You Save May Be Your Own by Flannery O'Connor?

O'Connor employs a detached yet observant third-person narrative in "The Life You Save May Be Your Own." Shiftlet is a stranger without a fixed identity who wanders into the Craters's lives. He soon moves in with them and takes an interest first in the Craters's automobile and then in Lucynell, Mrs. Crater's mute daughter. Shiftlet and Lucynell are married, but he abandons her at a roadside diner.