This was wonderful! I love seeing things from Ron's point of view.
His interaction with Hermione was brilliant, and just so normal Ron/Hermione.
I don't think Luna was terribly OOC; as with Ron, she's changed since a year ago, and this reflects that. I'm so glad that Ron was all nice and calm when facing Luna with what he heard Corner say, and I'm even more glad that Luna finally went to a teacher!

Now, what happened that McGonagall needed to get Flitwick? And the infirmary? I take it we'll find out in the chapter, and man I can't wait to know!! ♥