What is the author's tone in Sister of My Heart by Chitra Divakaruni?

There is a decided coming of age tone to the narrative. All in all Sister of My Heart is really a coming of age story for Anju and Sudha. The novel outlines both of the girls' transformations from young girls to mature women. This coming of age means that each of the girls must learn separate lessons as they mature physically and emotionally. Although some of these lessons threaten to tear they girls' relationship with each other apart, in the end they wind up with a stronger relationship than ever.