Oh wow. You've captured the emotion here BEAUTIFULLY. I find it compelling because it seems to convey the way she would feel after what she did really sunk in. As if this were a day or two after...the event, and she's realizing the full extent of what it means. Just breaking down crying after a day of being strong, waiting for the right moment to let it all out.What a powerful peice of art you've created.
Her hair is pure pink though, reminding me of certain type of Celestia... What did she do to Luna again? (Molesting jokes aside, this is a wonderful picture. The scene is really grave and heavy... Great work!)