Hrm, OK, I guess I phrased that really poorly.<br/><br/>The school building's walls, floors and ceilings are warded. Psychic powers such as Empathy and Astral Projection do not reach through them. (Trump does, though.) If Maddy were outside the walls--in the garden or whatever--she still could not reach inside the building. She could try to spread her awareness through the area near the school, and she has enough Psyche to make sense of the "noise" of the city. But she can't overcome the wards--probably not even by smashing through them. They're that tough.