How does Kira's community deal with the death of a citizen? Chapter 1

From the text:

This had been her mother, the warm and vital woman whose name had been Katrina. Then after the brief and unexpected sickness, it had become the body of Katrina, still containing the lingering spirit. After four sunsets and sunrises, the spirit, too, was gone. It was simply a body. Diggers would come and sprinkle a layer of soil over the flesh, but even so it would be eaten by the clawing, hungry creatures that came at night. Then the bones would scatter, rot, and crumble to become part of the earth.