"Because..." he trailed off, not sure what to say. "Because I care." He looked into her eyes. "Or maybe it was because I can't sleep with you yelling like that," he said jokingly, the same tone he used to use when they were best of friends, so long ago. And now the pain of everything disappeared for a moment, as he smiled at his sister, only caring to make sure that she was okay; forgetting that he was trying to ignore her and push her away.