This shows a side to Celestia that most people I think forget. Apart from being a ruler she is a mare and a sister and so she has the same type of worries as other ponies but her station is one of constant scrutiny and it looks to me she can't cry for fear of looking weak. She has been alone for a 1000 years and I'm also betting she didn't want to seal away her sister but she had no choice. I was listening to Gwyn's theme from dark souls and the pianos really set the mood. The stars must've taken ages to do and Celestia looking forlorn really makes me feel her sorry. A great pic for a vastly underrated pony.
What's she crying for? She FINALLY got rid of her useless emo sister and now has SUPREME POWER!! Rule the ponies like a true tyrant, Celestia! FEEL the POWER, Celestia! Let it seep up your thighs and penetrate your body! Let it penetrate you, Celestia!