After a quick explanation about the vampires' yearly event—a long-standing custom they had followed for centuries and one that would continue to be held for generations—Belle understood that she had no choice but to take part in it, whether she liked it or not.
The event clearly held great importance among the vampires. It was not merely a celebration, but a symbolic show of strength and unity. Anyone who refused to participate, especially someone invited as a guest or part of the royal household, would be seen as an enemy to the progress the night creatures were trying to make in building their land and changing their image in the world.
