In Mercy, Rain
Novelette 9,263 words Recommended by 2 award/anthology sources
Jack Wolcott was only twelve years old when she and her twin sister Jill, descended the impossible staircase and found herself in the Moors, a world of drowned gods and repugnant royals. After abandoning her sister to a vampire lord, and under the tutelage of a mad scientist who can do impossible things with flesh and living lightning, Jack quickly learns that in the Moors, death is merely a suggestion.
Content warnings 1
death
Quasar links out; the story lives on Tor.com, where the author gets the click.