What is the importance of Homer's death in the novel, Alternate Side?

The death of the Nolans' dog Homer is a symbol of the end of their marriage, and the end of their time living on the dead-end block. This is particularly evident when Charlie remarks sadly that Homer was always happy to see him when he came home from work and Nora begins to cry because she almost responded "So was I" (251). This is a sudden reminder that her marriage is over. When the Nolans arrive back on the block without Homer, Linda Lessman says, "Oh, Lord, everything is falling apart" (251), and this is exactly how Nora feels in this moment.