Beautifully done :)

I like how you've got Aang, the young boy, giving answers to an old Grandmother. Very sad, very sweet.

Beautiful, and so touching! It's nice to see an idea that's so often turned into a cliche written so well.

O-M-G. O-M-G. I think speech has eluded me. This is the most fascinating story... its brilliant... there's not enough words to explain this! Your writing is far beyond excellent- amazing vocabulary, spelling (which no one seems to have on fanfiction), and the idea- WOW! Notice that I've added you as my Favorite Author and Story- I'm not kidding around. You have an extraordinary talent for writing, and you should- no, you MUST- write another story. Otherwise you'll leave me heartbroken and aching for more. Congrats on a story well done!

aw I'm surprised I was expecting some form of Mary Sue...
This was great, I'm glad he found another Airbender that wasn't perfect.