Fledgling by Lula Monk

“Every fiber of her being wanted to leave Hornbrook and never look back, but there was too much here, too many unanswered questions. Too much at stake.
This whole “having powers” thing seemed crazy, but Mallory had seen the sparks dripping from Tara’s hands with her own eyes. And some invisible force had pinned Nan’s charred body to the rock face . . .
Mallory didn’t even have powers, and the way rumors seemed to spread on this campus, everyone would know that fact by tomorrow. Lock down or not.
But would knowing Mallory was a powerless fledgling keep them all from blaming her for Nan’s death? She doubted it.
Mallory looked down at the small crescent moon-shaped mark on her left hand, Lugh’s first words to her that morning burning her mind:
Who was she?”