The day after their fight coming home from The Petrified Forest, Frank is reflecting on his marriage. April had said the night before that he “had her in a trap,” and now Frank reflects on how she had never seemed fully dedicated to their marriage. Instead, before he had “trapped her,” she always seemed ready to leave him. For Frank, April’s apparent readiness to leave him creates both an insecurity about himself and a criticism of her. He relies on her admiration for his own sense of self, so the threat of her leaving is a devastating one to him…