I'm a librarian who loves anime, manga, and reading a wide variety of genres.
Oh, not good. This is clearly one of those steampunk books that hasn't even had a passing acquaintance with historical research. I'm not asking for much, just that the text vaguely feels like it's set in the stated location and year. In this case, London in 1900. And yet I'm already checking out the Oxford English Dictionary. "Skeevy," used on page 18 - U.S. slang borrowed from Italian, earliest usage appears to be 1976. Also, page 17 had Cora thinking about how an opium den "freaked her out." Earliest example of this usage is 1965.