Frowning, Kitty glances around a little bit. Nothing really stood out that could control the holographic room.

"Here, let me try something," she says, and suddenly starts fading through the floor and disappears.

Within the house, she can better see how the room is powered, and follows some wires to try and find a main connection. Once she locates it, she phases through to disrupt the current flow, causing the system to short out.