This was an awesome twist to the Goose Girl fairy tale! Some of the same features, geese, a white horse named Falada, and a girl trapped by, in this one her mother and not a handmaid but similar circumstances. So, yes, those elements but then thrown in a blender and add more magic, creepy familiars, murder, and a group of people trying to stop the sorceress Evangeline and it is a fresh and wonderful story that I enjoyed very much. I would definitely say that it is a bit darker of a fairy tale than the original (though that one also had dark bits) as Evangeline kills or destroys anyone that gets in her way to power and riches. Luckily Cordelia finds help when her mother sets her eyes on Samuel (a Squire) who has a sister with a bit of an uncanny sense for Doom. Hester is a very likable character and her friends are up for the challenge, even when it ends up with a woman going over the balcony to her death and a headless horse running around and spells for obedience.
I have read several T. Kingfisher books now and I have really enjoyed them, especially the ones that are fresh takes on fairy tales. This one actually might be my favorite though I also really enjoyed Nettle and Bone.