Materia Mahmoud marries James Piper when she is barely thirteen years old. She is of Lebanese descent and has dark hair, eyes, and skin. She is a skilled piano player who enjoys mixing up songs to amuse herself.
Knowing nothing about how to please a man or much less be a wife, Materia struggles for the first few months of her marriage. When she is pregnant with Kathleen, James is repulsed by her behavior and physical appearance. He refuses to touch her. After Kathleen is born, Materia tries to bond with the infant but just cannot find a way to love her child, no matter how much she tries or prays about it. Her neighbor, Mrs. Luvovitz, provides some guidance with child rearing and cooking. Only after Materia has Mercedes and Frances does she finally becomes more comfortable in the role of wife and mother.