All I remember was that during the late 2000s or early 2010s, there were shorts aired between programs (like ads, kinda like how "Over The Garden Wall" was aired in CN Network), the shorts were about a girl trying to steal a book from some kind of cult or evil empire.
The girl looked like Alice from "Resident Evil", I remember that the show had a steampunk aesthetic and one of the villains looked like the wind-up assassin from the first "Hellboy" movie.
I don't remember if the shorts were the entire series or were mere ads for a full series.