What is the main conflict in The Jilting of Granny Weatherall by Katherine Anne Porter?

The Jilting of Granny Weatherall" is the story of the last day in the eighty-year-old woman's life. In her final hours with her surviving children around her bed, Granny Weatherall reconsiders her life and ponders her impending death. Almost against her will, her thoughts return to an incident that occurred more than sixty years earlier: She was left standing alone at the altar when her fiance George jilted her.