Can Cass predict what your character is thinking/planning/doing? Yes. A world of yes. Especially concerning his thoughts, he's an open book.
If yes, what limitations do you have on this? WELL SOMETIMES Griffin has a habit of changing his mind right when he's in the middle of an action. He's kind of ADD.
Is there anything you'd rather she not be able to predict? Nope! All is fair game.
Anything else? HOW HAVE I NOT FILLED THIS OUT YET