I'm a librarian who loves anime, manga, and reading a wide variety of genres.
I think I might end up liking this book more than the first one, although there's still plenty of time for things to happen that could change my mind.
The plot is technically more complicated this time around, with more on-page players and story threads. While Daughter of Mystery was definitely historical fantasy with romantic elements (rather than historical fantasy romance), The Mystic Marriage has even less emphasis on romance. Jeanne finds herself drawn to Antuniet's passion for alchemy, and Antuniet wonders at Jeanne's motive for continuing to visit her, and that's pretty much it. I'm not complaining - at the moment, romance would be a bit much. I'm really looking forward to learning more about Jeanne, though. I like her even more than I thought I would.