How does the choice of narrator in the book, Housekeeping by Marilynne Robinson, influence the overall theme and insight to the development of the story?

How does the choice of narrator in the book, Housekeeping by Marilynne Robinson, influence the overall theme and insight to the development of the story?

How does the choice of narrator in the book, Housekeeping by Marilynne Robinson, influence the overall theme and insight to the development of the story?