What is the main conflict in Animal Dreams by Barbara Kingsolver?

In Barbara Kingsolver's Animal Dreams (1990), Codi Noline, a young woman unsure of her purpose in life, returns to her hometown of Grace, Arizona, to teach high school and care for her father. As the novel unfolds, Codi gradually becomes aware of important political and environmental issues. She also learns that the detached and cynical individualism that has dominated her life is not the best recipe for happiness. Her exposure to Hispanic and Native American culture shows her the value of the communal way of living, which emphasizes deep and lasting ties to family and to the earth. Although her life is blighted by the tragic death of her sister, Hallie, Codi finally finds peace in the knowledge and acceptance of who she is and where she comes from.