Some nice quote-bites:
About "Gift of the Unmage"
The mythology is rich, the characterization full, the coming-of-age portrayed realistically and patiently, the tension while personal is compelling, the dialogue smoothly handled, and the physical detail sharp and vivid.
Thea’s character remains fully formed and we continue to see her mature at a realistic pace, complete with self-doubt, mistakes, backsliding, regrets, etc.
...a richness, depth, and true emotional impact that close the book out strongly.
...a strong likable central character, an original and intriguing mix of magic and technology, and a richly veined core of mythos.
You can read the whole thing here.