Excellent story, excellently written, and a joy to read. In a certain sense of the word 'joy'. The style is very appropriate for the period, and handles the horror very satisfactorily. The characters are particularly well visualised, and very clearly differentiated. A very few anachronisms, and a little twinge of fridge logic about how easy it was for the events to come about as they did and for certain of the protagonists to achieve such results were the only - and very minor - flaws in the whole narrative. I look forward to the author's new books!
You may know this author better from her superb webcomic - "Gifts Of Wandering Ice". These short stories have much the same touch: a simple enough story on the surface, that opens out into fascinating studies of what it means to be human, what it means to be alive. In other words, these stories are what fantasy at its best should be.