"I think that's how you know," Theodore said, holding her close. "Your head hurting - that's what happened to Zach." He didn't know if that was a general effect of the potion or, as he suspected, her mind trying to fight it off know that she consciously knew it was there. He tried the same spells to ease the pain that he had done for Zach, though that had not seemed to help much before. He suspected that it was a different type of pain - closer to emotional pain than physical. "I'm so sorry, love. Just breathe, it'll pass."