Who is Baby from The Clay Marble: And Related Readings and what is their importance?

Jantu's primary responsibility in her family is the care of her younger brother. He is with her constantly, she loves him deeply, and at times sacrifices her own well being and/or pleasures so that he will have a better life. In her final moments, as she lies dying, she calls for him to sleep with her, taking comfort from his presence and holding him one last time.