Hey Ashley. First of all I'm sorry Cassie is getting targeted by that thing. It really, really sucks.

But I'm worried about you. I'm afraid you're starting to project too much 'human' characteristics on the supernatural creatures on campus. You seem to put too much trust in the devil and the laundry lady these last updates. You should NEVER trust a supernatural like that, we all know what happened with Kate and the lady with extra eyes.

Sometimes what is good for them lines up with what's good for you, and in that case some sort of 'treaty' can be good for you. But most wouldn't hesitate a moment to throw you under the bus if their rules allowed them and it would be better for them. Maybe the only exception is the library ghost, but even with him I'd be careful because it may also turn out to be a lady with extra eyes situation.

So to summarize: I think you shouldn't go out looking for help from the supernatural creatures. And always remember that even the help they offer could be negative for you. There's a reason the common rule of Kate's town was to 'not make bargains with evil things'!