Performance issues aside I don't know how to even win the game.
Items in shop are too expensive to buy with no currency in the beginning and whenever I try to stop the books from flapping the green succubus chases me.
The TV in the living room is the biggest help to stopping the girls as you monitor their movement before they have the chance to enter the house.
Doing some cleaning around the house can score you some extra SOM to spend once you've finished the night and also keeping as much sanity is the best way to earning positive SOM at the end of each night.