1810 England, the height of the Napoleonic wars. It was thought that humans walked the path of enlightenment leaving monsters and dark things behind. However, those monsters and night stalkers merely hide in the darkness, as a young maid, Bernadette, soon finds out.
I am never writing anything which has a basis in histroy ever again. Too much can go wrong or be inaccurate. I cringe at some of the things I wrote before. I hope that nobody has noticed or it isn't too big a concern to you.
I agree with above comment, nowadays with the notion of "alternate universes" your story could be set in a similar but parallel history of earth. One where vampires exist and feed off alchemic human/cats.
People suspend their disbelief (: Visually and with dialogue your comic has done a good making the reader feel that it is set far before our modern days.