First of all, I want to point out that this book is an easy to follow story. It moves you along from point to point without miring you in details, although you get a very good view of what the world is like. Some may find it too quick or too easy to get through, but I was not left asking "but what about this detail?" It gets to the point without dropping important details, in my opinion. I didn't have to go back and re-read to understand the story. Mentally speaking it's as easy to chew as a Caesar salad but it has the flavorful punch and substance of a Porterhouse steak. And you're gonna come back to re-read this for fun, not to comprehend what you missed the first time around.
Most importantly though, I did not see any continuity errors. That's probably because the author followed the first rule of continuity: don't get so complicated that you lose track of things.
Then there were all the tropes that Mrs Burris smashed in this story. Trust me, one of them is going to be subtle but downright shocking, and to the very observant, extremely controversial and perhaps irritating to small-minded folks with no sense of historical perspective. You'll know it when you see it. Well played, Mrs Burris, well played!
Next, anyone who has ever read Octavia Butler's "Kindred" will notice a strong parallel between Chalcedony and the Kindred's character Rufus. Like Rufus, Chalcedony descended into madness due to her possessive nature, and like Rufus her victims were given no sense of agency or choice as to whether they wanted to stay or leave her realm. Fortunately, the author (intentionally, in my opinion, and that's an infinitely good thing) derailed Chalcedony from going full Rufus - romantic relations with humans were illegal in her land, and almost everyone wanted Coal gone out of there, or dead. Unlike Rufus, she kept her captives - Coal, and then Elizabeth - as toys. Chalcedony used deception and hypnosis to lure in Elizabeth, and a lifetime of outright indoctrination for Coal. The author did a bang up job of presenting this.
Chalcedony's journey to becoming an obsessed maniac was a rocky one, pushed along largely by her chronically scheming lackey Madoc. The author again hit this ball out of the park - I was left shaking my head at the downhill slalom Chalcedony took toward her full blown face-heel turn at the end. It was as totally believable as it was sad to behold. I went from feeling hopeful about their potential relationship to, in paraphrasing one other reviewer on Amazon, "I want to see the downfall of this HBIC." Though I'm not sure which HBIC we're talking about... Chaley, or Madoc? Note to author: do we get to see them both get hit by the bullet train of bad karma?
By the way, there's nothing urban at all about this fantasy story. Two trips to Earth amounting to about five percent of the story doesn't make for urban fantasy. Just wanted to throw that one out there.
Like I said, Constance Burris packed a lot of riveting details into this story and made it all go down easy. I hope they can make this into a movie one day - it's many orders of magnitude better than *ahem* sparkling vampires. The way this story was written they could make quite a stealth blockbuster on a shoestring budget, though CGI dragons and driders can get a bit expensive. Indie directors and gofundme, perhaps?