Sorry to bring this thread up again after so long, but I was reading the seventh book again, and came across something that still confuses me..
**please note: I'm not going to bother with the spoiler tags. It has been long enough (just over a year) since the last book came out, I think, so if there's still something you don't know about the series, steer clear of this topic.**
Anyway, I forgot which chapter it's in, but on page 617 of the American verison of the book, Harry is trying to talk to the Gray Lady (the Ghost of Ravenclaw), and ask her where/what the Horcrux is. There's a line that goes something like "He (Harry) suddenly understood why she hadn't told Dumbledore or Flitwick this story"
Why was it that she hadn't told Dumbledore or Flitwick is what I sort of don't understand.