It's the night of the third day following Luna's return. Celestia invites Luna to her room and finally has a chance to tell Luna something she's shared with no other pony, not even her faithful student, Twilight. She explains to her sister how she spent those days during the thousand years, by revealing her most heartbreaking memories and showing Luna a room that no other pony has ever seen before.
Note:
This story is something I've had in the works for over two years now. The cover image and the song "Lullaby for a Princess" had strongly inspired me, along with a number of other images involving Celestia and Luna's sorrow. While I had the concept and a rough outline, I was never quite sure how I wanted to do the delivery. I wanted to do something that would tug at the reader's heartstrings, but until a few weeks ago, I didn't have the inspiration or the confidence to follow through. But now, whether this story succeeds or fails, I'm glad I found the inspiration to write this. I'm happy with how it turned out and hope you will enjoy it as well.
I know there are a number of other similar stories out there, but this is just my thoughts on how Luna and Celestia's reconciliation took place beyond what we saw in the series pilot.
If anyone knows the artist that did the cover image, please let me know so I can post a link and give them credit for such an inspirational work or art!