Answer:
Book: The Jilting of Granny Weatherall
Author: Katherine Anne Porter
Sixty years earlier Ellen, or the dying grandma, was supposed to marry a man named George but he left her on the day of their wedding. Out of spite for George she married John and started a family with him.
The effect was that sixty years later she refuses that she is dying and she is also very harsh with ther family.
She misinterprets the reactions of others. “Perhaps the grass in the other field is better,” suggested the aunt fatuously. Hope this helps!