I think this book is a good start and did a decent job in beginning to build this world but there definitely needs to be more to make it a complete story. Some of the characters need to be fleshed out more. I would like to learn more about how the Raveners are made and what the veil and why there are so many remnants and vicious ghosts.
It was easy to root for Aster and Clementine, Violet, Mallow, and Tansy as they ran from the Green Creek welcoming house, which in my opinion is not a very welcoming house for the girls that must serve there, marked by magic ink on their faces.
This book was more of an introduction to some of the things in that world and it definitely ends on a cliffhanger so I hope there are future books in the making.