I honestly think it's impossible for me not to love a T. Kingfisher novel. Her imagery is so creepy and sometimes disgusting and it's so good to help set the vibes of the book. I love that they're a cross between horror and fantasy so you never know exactly where it's going to go. And she always has some kind of found family aspect which is my favorite trope. And this book is no exception. 
I really liked the magic system in this book. It seemed realistic and the idea of a person who can control other people's bodies is creepy and fascinating at the same time.
I really enjoyed Cordelia's POV. She was so naive and sweet as well as determined and smart. I felt for her almost immediately especially after learning what her mother was doing to her. 
Hester was also good to have as a POV too. Cordelia was a bit of an unreliable narrator and Hester helped put things into perspective a little bit. She helped mellow out Cordelia's anxiety-filled scenes which was very necessary.
I loved watching Hester and Cordelia become closer and then she was adopted into the rest of the group as well. It was heartwarming, as it always is when Kingfisher writes it.
Anyway, all of this to say, I will always pick up anything Kingfisher writes and more than likely thoroughly enjoy it as well.