Butterflies and Cravings

Selene froze in the Prince's arms as she watches the bluish-silver butterfly gracefully lands on her hand. It's the same type of butterfly she saw before the Messenger appeared before her. Is it going to be the same thing all over again? Is she going to appear before her? Surely, not in the middle of the room crowded with various guests. If that happens, it will be chaos, and she had no way of knowing how to explain things.

Selene stopped in the middle of dancing with Prince Nicolai while her gaze zeroed in on the butterfly. She felt his curious gaze flitting from her to the beautiful but fragile creature on her hand, but to her surprise, he remained silent.  A small act of maturity on the Prince's part, or maybe he knows something more than he's letting on? In this world, what does it mean when a bluish-silver butterfly appears? Does it hold deep meaning, just like in her own world?