After reading Dragon Queen, I was disappointed by this book. There's some awesome parts, but like in her other books, I notice that she has the tendency to sometimes focus and expand unimportant scenes (or scenes which don't really have anything to do with the main plot) while briefly describing more important and relevant ones.
I found Guinevere's journey to the other world to be boring and unneccessary. Sure, she's supposed to gain allies and stuff, but this part of the book would have been more enjoyable if Ms. Borchardt spent as much time fleshing out her relevant scenes as she did the filler scenes. I mean, this book honestly was more filler than plot, so by the end of the book I felt terribly let down and disappointed, since it didn't really feel as if anything was resolved. Yeah, the scenes were beautifully described and it was easy to imagine the surroundings, but at times, I found myself growing very impatient with the plodding and disorganized plot.
Sadly, we will never know what happens, because Ms. Borchardt died before she could finish the third book. Given the disjointed quality of the first two books of this Guinevere trilogy, perhaps we're better off drawing our own conclusions as to what happens to Arthur and Guinevere.