Interesting to see Fat show up, as well as Hermione's exclamation LOL, and will be interesting to see how Dumbledore takes to the new visitor, and if he is a caring Headmaster, or manipulative punk who is unwavering in making sure is weapon is untouched?
Author's response
I figured that if she said it while meeting Harry Potter, naturally she would use it meeting someone more famous.
As for Dumbles, that is the question, isn't it? I just wish I knew the answer. He's playing cagey at the moment when it comes to writing him.