Fred sighed and put the book on the "looked in" pile. She leaned back against Castiel, having gotten a little used to his being around. He was oddly warm and squishy, in a not at all squishy manner. There was just something different about him, but she wasn't going to develop a crush on him. He was having a bad reaction to something, and how ever he was feeling was not natural, that much she'd decided.
"A Watcher. Like the Gregori?" Fred lifted up as she started thinking, stretching out across him to grab another book. She thought she'd seen something about them. "But, didn't they fall too? Too many angels. If I knew..." She paused.
"I know you come from Heaven, very few angels don't come from Heaven. But, are you the hero in your story?" That seemed like a safe way to say it; she wasn't sure she could be responsible for disillusioning an angel. "Do you have other heroes in your story? We've all got stories, and I'm not at all the hero in mine. I'm sort of supporting cast, the quirky smart girl." She hoped he understood.