I'm certain Mad Eye rues the day he allowed that information in print.

I hope you have an opportunity to inspect that magical eye one day. It is absolutely a marvel. And quite right, it would require long years before you could achieve anything of that calibre, but that's not to say that you will not master extremely useful skills in the remaining weeks of your summer.

How is it, really? She's challenging you, I gather, but not leaving you feeling dismayed, I hope.