I finished reading Sisters. I am not trying to spoil the story.
Sisters is about two sisters, Raina and Amara, who go through difficulties. The book shows picture then and now. The then part helps you better understand the now part. Foe example, it Raina and Amara are getting into trouble that minute [in the now part] it would show how they got in that specific situation.
I thought Sisters was a terrific book!