BREADCRUMBS by Anne Ursu, illustrations by Erin McGuire. This book is in my TOP 5 ALL TIME FAVORITES. A retelling of THE SNOW QUEEN by Hans Christian Andersen, this book is so much more than it's inspiration. A MUST READ for all fans of fantasy. The protagonist, Hazel, is a fantasy lover as well and mentions many great books in her narrative.
In A Glass Grimmly by Adam Gidwitz. A Companion to A Tale Dark and Grimm this book focuses on the tale of Jack and Jill and throws in a few fun twists and turns along the way. My favorite might be their friend Frog.