Queen Esperanza definitely interested me the most in this. All the characters felt developed, but particularly the part where Selena brings up the assassination plot, it did a lot to show how complicated Esperanza was, and how her people saw her.
I just felt bad for Talia the entire time, and I'm glad she was treated as more sympathetic. I would have definitely liked to get more on if there were other options for her. Because as it is, it feels like she was doomed to villainy by nature of having to survive, and thus being treated unfairly.
I liked how the magic was handled overall. Could have used some more elaboration on fairies generally, especially since we only really see (or hear of unless I'm forgetting something) Selena and Talia. But the use of magic throughout was fairly coherent rather than confusing.
Scene transitions could have used some work, but for the most part, I was able to follow what was happening as I kept reading (such as when Valeria thinks she's at her coronation when she's really sleeping).