Wow. 
 This is one of those books that I already know I will re-read over and over and will continue to be a favorite of mine. I devoured it in less than 2 days and wanted it to keep going at the end. It is everything I want from a fantasy novel, with quite a few things thrown in that I didn't even know I wanted. 
 The magic in this story is perfect. It is strongly affected by the person wielding it and reflects their own personalities. There is none of that scientific, formulaic magic here that is over-burdened with rules and limitations, although they exist. Magic is true Art, and while some follow closely to precise spells, others sing their magic. It's beautiful. 
 Our heroine is likable, and her evolution and "coming of age" through the story felt natural. By the end of the story, she is so different from how she started, but there was never a point in the book where she seemed abruptly altered. It flowed throughout. The supporting cast is equally well drawn and layered, and I felt just as invested in their future as in hers.