Benway utilizes a third-person limited perspective with three different characters: Grace, Maya, and Joaquin. How does this narrative choice enhance the depth of the story?

Maya feels like she has spent her whole life looking out for her younger sister. What does this tell the reader about expectations placed on older siblings?

Maya and Joaquin express no interest in finding their birth mother. Why is Grace different? Why does she change her mind after 16 years of indifference?