Grief (novel)
During the course of the novel, the ideas of the stages of grief are introduced. The stages are denial, anger, depression, and acceptance. The narrator, as well as other characters in the story, slowly passes through these stages in trying to deal with death.
Mourning
The above five phases can be linear but often a mourner can flip back before starting to move forward. A good way to pass through grief is to understand what has happened and share the feelings and emotions with relatives or people who also are grieving. These steps do not necessarily follow each other. It is not an inevitable process.