It's almost considered too blunt to say that someone died. Instead, we might say that they passed away, or that they passed on, or that they lost or gave their lives. Some might argue that the difference between those wordings is slight, incidental, even meaningless. After all, in cold facts the end result is the same. Yet those words are different, they mean different things, and we use one or the other to convey different meanings - this is especially true of the last two examples. The difference between losing a life and giving a life may be subtle, and yet it makes such a difference in how the person and the event is perceived. One makes the death a tragedy. The other makes it heroic, because it expresses that there was a choice involved, it gives the individual agency.
Of all seven Cradle books that have been released so far, Ghostwater was my favorite. This novel delivered on all of the promise that I perceived when I read the first book. It has the most robust character development of the series so far, digs into the technical details of the magic system, instead of just building out to the next level, and it gives insight into some fascinating aspects of the world and the story that have only been alluded to before. Perhaps most strikingly, it is drastically more imaginative than other books in the series, which is a testament more to the level of imagination involved here, than it is an insult to the imaginative level of the other books.