This is book two of the Withern Rise series.
I enjoyed the first book in the series about Alaric and Naia enough to continue reading. This one continues their story, with Naia adjusting to her new world, but never really giving up what she had, and Alaric loving the restoration of his world, but wracked with guilt.
However, instead of having pretty much parallel lives, with Alaric trying to dodge responsibility and his need to make things right, we are introduced to not another, or another, but FOUR alternative timelines, all of which could make one's head spin. Talk about a kid who keeps making mistakes.
And miscommunication. How easy it is for people to be unable to talk with each other, to assume the worst, and act upon those assumptions.
I'll read the last book, this one was good enough. If you're a fan of the first book, definitely keep reading.