Sheena was quiet as she grew thoughtful. After a long moment, she said, "On my world, we can share mana with others. It's only done in emergencies, when it looks like the other person may die from total loss of mana." Her words were slow, as if she were still forming the idea and question behind them. "Since they were sisters, do you think it's possible Celestia shared her power with Luna? Replenishing the power she had lost with a little of her own bit by bit?"

She shook her head. "Friendship was like a job to him? Something he could just quit at any time and not be worried about it?" She made a sad, scoffing sound. "Let me guess: Tirek either betrayed him, or just pretended to be his friend, right?" She knew how that felt.

Listening, she hummed a little in silence. No prophecy, but that still didn't account for all of the things he had told her had happened. As she thought about everything and everyone involved, she noticed something.

"Hey, Shining Armor. Did you ever notice something about their names? Celestia, Luna, and Twilight's? They're all names that deal with the sky, and 'Twilight' is the time between day and night."

And that couldn't be a coincidence.