Lucy considered this a moment. "So it's like how Dryads understand trees and meremaids understand fish but I'm at a total loss," she decided at last. Very well. "Will you, er, tell TARDIS hello for me? And that I am very happy she has allowed me to come aboard and look around." Well, it never hurt, Lucy figured. Like thanking a talking horse, right? Right, Lucy. Just like that. (Only not.)