If you like McKillip's books, you will almost certainly like this one, because it shuffles themes and characters she's used before; I'd say this is closest to Shadows in Ombria and The Riddle-master of Hed.
Well, if you like McKillip's books, as I do, you probably don't think of her style as something as scuffed as shuffling; the pleasure is more like that in a villanelle, in which you very soon know what will happen and venture on to hear how.
I wasn't convinced by the gentle ending; a tyrant changes his behavior based (mostly) on fear, but the fear is based on historical knowledge, not anything he's seen. Maybe. I didn't mind not seeing half the characters killed in resistance. I've happened across enough grim light fiction recently, for one thing, and for another McKillip doesn't make the danger seem trivial.
Worldcat doesn't seem to have it yet;
ISBN: 0441012485So wrote clew in SF&F.