And then it took shape in the mist: a dark house, which loomed at them out of the formless whiteness.
"But that's –" said Coraline.
"The house you just left," agreed the cat. "Precisely." (6.51-53)
There was nothing else there in the mirror. Just her, in the corridor.
A hand touched her shoulder, and she looked up. The other mother stared down at Coraline with big black button eyes. (6.74-75)
Through the stone the world was gray and colorless, like a pencil drawing. (8.116)