There were a lot of good things in this one, but I found Yelena very annoying. She randomly swung back and forth between intelligently planning and reacting with no thought at all or letting herself make incorrect assumptions. It felt like she was missing obvious things or willfully refusing to ask the right questions. She also lacked compassion often, as well as communication skills. I get that this was part of her arc to accepting herself and her magic, but it felt overdone.

This is consistent throughout the books, so I don't think this is a spoiler, but I don't like how 95% of her interactions with Valek are private. It made me wonder how quickly things would fall apart outside of their "bubble".