The old, old woman belonged with the large, large woman who was assigned to her as caregiver, through some sort of agency. They both enjoyed moving slow, and so, they shuffled up hill.
I.e., I have been spending too much time on the Upper West Side, where old, people who have lived there for about 100 years still roam the streets towards marketplaces for cinnamon and glass bottles of milk.
They are assigned some Person who meanders beside them at an hourly wage, listening to their screams and sleep sounds. I hope, at least, that they are friends.