This was a good read. I have played a bunch of Catherine in front of my girlfriend but no arguments have come up as she knows it's just fiction. I did play it honestly though, staying true to Katherine and getting the True Lovers ending. She actually wants to see what happens if I cheat her on though and where the story goes from there haha.
I think first playthrough I used hammer and pistols. Second one was machete and musket, I haven't had any trouble with that combo. Just hack up all enemies with the machete while having that getting health potion buff thing and the musket for when things get a little too close for comfort.