This is no longer a fairytale. Perhaps it never was. Emberglass has slipped from the clutches of one evil queen to another; maybe Adaire is not the hero Celestia needs. It is better to turn away before she makes things worse, but Adaire is already too deeply entwined. And when Queen Sereia seeks her out, she must rethink where her loyalties lie.
It is difficult to be the hero, but sometimes it is harder to be the villain.