Prizraki

Once upon a time, there was a witch.

She lived in the woods, in the eerie, blown-out carcass of an old duchy. She was nameless, pastless, confined to a world in which magic was a price to pay and a bargain to make; a world she needed to be returned to, urgently. And it would be a thankless task, of course, but someone had to do it, someone do it, and she, Oksana—

is someone. 

A prequel to Light as a Feather.