As soon as Luna's eyes opened, she was greeted by a face full of white.
"Soooooooo," Celestia greeted. "How was your night?"
"Sister!" she berated. "You know I hate it when you get in my face like that."
"I'm sorry, I was just so excited!" The Princess of the Day pranced around the room, before immediately deciding to intrude on Luna's personal space again, even though she hadn't even gotten out of bed yet.
"What did you see?" she asked eagerly. "What did you see?"
Luna gave a small smile as she sat up, leaning her upper body on her bed's soft headboard. She'd have to be sure to keep it as nonspecific as she could. She didn't want to give away too much of their world's denizens' private thoughts.
Yet, seeing her sister look so eager and filled with life had made the journey worth it.
That said, if Celestia ever asked her to do that again, she'd do what she should have done in the first place and just make something up.