** spoiler alert ** 
 Griffen is an new and interesting concept. The whole Universe of the story is very complex and multi-layered that I feel the story could have been much longer to fully explain everything. Griffen is a very straight-forward character with little surprise. The story moves very fast without much explanation or details specifically with regard to Griffen's training (advances from a newborn to a skilled vardger in several pages) and her relationships (gets attached to two characters from first sight). 
 Overall, it was very enjoyable and I would be interested to read more in the Universe of Mirror Souls. 
 ARC provided by the publisher via NetGalley in exchange for an honest review.