In her only narration, Addie--already dead--narrates the following:
And when I knew that I had Cash . . . That was when I learned that words are no good; that words dont ever fit even what they are trying to say at. When he was born I knew that motherhood was invented by someone who had to have a word for it because the ones that had the children didn't care whether there was a word for it or not. I knew that fear was invented by someone that had never had the fear; pride, who never had the pride (Faulkner 163-164)
She realizes that language cannot express the nihilism she feels. She says that language is a male construction..."it was invented by someone" who never experienced motherhood. To Addie, language arose in a patriarchal society; it does not account for the non-verbal, emotional, and psychological depth that she feels.