I think this is a middle grade ft. a young biracial kid Dally Petteharrington who is trying to live her life by being adventurous after the passing of her beloved grandfather.

This one has a magical secret library as the title implies and the author discusses a lot about Black history in the US which then led to the main character's dilemma being a biracial kid living in this modern times. It sometimes felt a bit too much but I understood what the author wanted to impart.

Enjoyed this book I think I finished it in less than two days, 4stars!