i don't know what genre your story will be, but when i was reading the first half of the plot, i thought of some kind of cult...? i like horror, so if you wanna put some horror on it, i'd recommend something like that, you can picture the strange part of the city as, at first sight a funny and better place to be, but as the story progress, it's revealed that Alexandrine takes there innocent people to give them to the ulterior powers of the other side, in a "bring the chaos to the human side" kind of plot...