What memories and details suggest Granny's physical and emotional strength?
Granny has memories of when she cared for her children and took care of her farm. She also helped her neighbors by caring for their sick children and their animals. She also was able to make it through the frustration of being jilted by George. The jilting is the key in this story. She was able to endure that, but she did carry it with her through the years. This shows her emotional strength the best.
"For sixty years she had prayed against remembering him and against losing her soul in the deep pit of hell."