Preventing it from happening again... haha, how about not running between two people hurling spells at each other? That seems like a pretty good preventative measure.

Ghoul studies the book in her hands, and he reaches out with of his own as if to take it. His fingers get close to skimming the cover, but before he actually makes contact he pulls back with a frown, looking uncertain when he glances back up at her face. "Does it say anything about fixin' it? Or, uh, what to expect if it can't be fixed?"