Escaping from the accursed city

They're about to try and escape from the city, this can't end well for sure. Rottie's mom is the main suspect for everything right now, but I'm sure there's more to it considering the whole setting.
She is definitely evil and is definitely doing horrible things, but she doesn't feel like a "mastermind" type of character. There has to be someone behind her controlling the events in this city. Just who it is is the question. It has to be someone we already saw though as it would be weird to add a new character this late in the game.