Alice opens her (now tiny) mouth, and for a moment it looks like she's about to shoot down that idea too. But then she slowly seems to realise something and her shoulders sag in something between defeat and acceptance.

"Perhaps just take me right outside of the carriage for a moment. I might be able to grow myself back to my regular size." And outside of the party is a better place to attempt that than in here, where she's very likely to be trambled once she's on the ground if she doesn't pay close attention to everyone's feet.