Hes surely seen the rabbit before, hasn't he? He tries to think... perhaps it doesn't matter. Miracles usually don't. One wants something to happen and it does, that's how that works.

"Mm. Uhh.. nn, yeah." he stammers, then without another thought to complicate things, snaps his fingers, the rabbit appearing on the table in the room, as if it had always been there.

Crowley makes a face that's shrouded in complexity. He's not certain Alice had ever been this upset in his presence, and the rabbit itself is one of those human things he doesn't quite get. Alice is complex herself, and she deserves so much more than he feels he can give her.