MAX THIS IS SO IMPRESSIVE. It's been a while since I read Frankestein but from what I can recall, this follow it pretty decently! Really nice touch of the background, yess.
The player were often offered multiple choices for specific scenes but I sometimes found myself going back and forth wondering if the choices actually mattered. For some of them, it was noticeable that it would barely change the next bit of text and it seemed like there were a fair amount of those. I think it's a good amount of choices and options overall though. There weren't really any sections of text walls, they varied back and forth, and I think that helped in not making too many walls. However, if it becomes unavoidable, I do suggest making sure the paragraphs are indented properly when playing and that the text wall nodes actually have a significant turn in the story. It can be used as a good signal to the player.