Good start to a post-war story.  Can't wait to see more!

I like the train-of-though style you used for this chapter.  Harry is finally allowing himself to feel the relief that has to come after such a big victory, but he is also starting to consider the aftermath.  What will happen to Hogwarts, to the life he was used to?

The one thing I would have liked to have seen was more conversation between Harry and McGonagall.  I was left wondering what exactly the point was to Harry's journey to the Headmaster's office...and I have a feeling they would have more to say to one another.  That's just me, though.

Overall, great chapter!

What an intruiging prologue!  Welcome back, Lily!  I'm looking forward to reading your story as it comes!