Does patty reeds grandmother die in the book patty reeds doll and in real life?

In the book "Patty Reed's Doll," Patty Reed's grandmother does not die; she plays a supportive role throughout the story. However, in real life, Patty Reed's grandmother, who was named Mary Ann, did pass away before the events of the Donner Party tragedy unfolded. The book focuses more on Patty's experiences and the challenges faced during the journey rather than on the details of her grandmother's life or death.