This really happened on Thanksgiving Day, 2011.
Great-Grandma was sitting at the table, she's got a touch of the Alzheimer's. She leaned in close to another relative and pointed to a third relative (her former daughter-in-law) and said, "I don't talk to her."
"Why not?" asked the curious relative.
Great-Grandma started slowly shaking her head. "I don't remember," she said sadly.
Time is too precious to waste not talking to people, when someday we might not remember why.