Which incident taken from o’connor’s “the life you save may be your own” is the best example of irony? lucynell crater falls asleep in the diner before she has a chance to eat her food, and she is left there by her husband. mrs. crater gives her car to mr. shiftlet in hopes that he will marry her one and only daughter. mrs. crater thinks she is gaining a son-in-law, when in fact mr. shiftlet takes her car, her money, and abandons her daughter at a diner. mr. shiftlet appears at the plantation house and explains that even the best doctors cannot know what is in his heart.