Sunshine is more confident in herself as the book continues. She not only stands up to people, she admits things to herself that she didn't want to admit before. The majority of this book is her training in Mexico, but even so she never stops thinking about the people she cares about, the ghosts she can help move on, and the darkness she has to defeat. The darkness is a mystery and it played Sunshine right to the end. Sunshine's growth constantly plays throughout the novel. Each time there is a situation she couldn't handle before, she now knows how to handle and learns more from it. She is humble, accepting, and though she makes mistakes she truly does care about saving the world. We see so much of her strength in this sequel, and it is lovely.
Nolan isn't in this book that much. After a falling out with Sunshine, he sticks to himself until trouble finds him. He is still intelligent and he enjoys research, but he also craves human contact with those who understand him. With Sunshine gone, a new friend comes along and brings about trouble. He cares about Sunshine and such is evident as he struggles along to find her and get her answers despite a fight right before she left for Mexico. Their connection is deep and unbreakable, but definitely has to go through some trials.
The writing is lovely. Everything flows and it reads quickly. Rich in world building and full of characters you can't help but love, you'll find you can't get enough of the story!
Overall, this is an intriguing installment to the series and it seems it will only get better from here.