"That means running back up those stairs to the surface immediately. If we don't, we'll be buried alive. And even if we survive the collapse, we'll still be trapped here, and those limestone stairs won't hold up either."
Addison could hardly doubt Zion, after all, he had always been the one most fascinated with architecture. His reminder made her realize the problem as well. Whoever built this place must have anticipated all of this from the very beginning.
It seemed they would be forced to choose: save the Dark Fairies or save the Light Fairy. The logical choice would be to rescue the Light Fairy first, purge the Night Walkers, and leave the Dark Fairies buried here for eternity.
But the more Addison thought about it, the more it didn't feel like the true intention of the one who created this prison. If their goal had simply been to destroy the Dark Fairies, why hadn't they done so long ago, especially when they had a Light Fairy on their side?
