I really like this! The card-driven and horror combo makes me think of Murderous Ghosts, which is good company for a game to be in.
Favourite details: Well, the title is great, first off. Really gives off the gothic kind of vibe that suits the story well. Shout-out as well to the beautiful job you've done with the formatting and public domain art assets; the game is clean and well put together. Mechanically, I really dig the possible Joker draw (you must betray the party) -- what a fun wrench to throw in, especially given the low chance it will happen. The resolution system makes sense to me too! The way you've parceled it out into different card groups seems like a good way to resolve skills and abilities.
Would be nice to have: I dig the Act 1 / 2 / 3 thematic formatting, but it did throw me off a little. Read as written, it kind of implies that setting and character creation take a full two thirds of the game! And like, maybe that's the case, but I would guess that's not what you had in mind.
Anyway -- again, really solid work here. It's been fun exploring your submissions to the jam, and I'll be sad to not see more of them in the ocean of games I have yet to wade through! Haha.