"Okay, this time it'll work." She stretches, cracks her knuckles, closes her eyes, does circles with the tip of her wand, and then: "Expecto Patronum!" And from the tip of her wand the light leaps in the form of a ferret, trotting in the air until it reaches the floor. It looks up at them and its nose twitches. "Omigod I have the cutest Patronus!"