in break your glass slippers, like its sequel down below (and probably the third book as well) someone gives advice to the main character (if you can even have a main character in a poetry collection). Because this collection has notes of Cinderella, it’s the fairy godmother who’s giving advice. 

With Cinderella we mostly know what this collection will focus on feeling trapped, not feeling good enough even though you’re doing all that you can. Again, it focuses on self-worth and telling the reader through the fairy godmother – you’re good enough, you’re more than good enough.