Taking a sip of soda, Lilly looked at Sam, and begin to match his expressions; probably unconsciously. She listened to him, and decided that she had to quickly ask a good question to get the ball rolling. Obviously she couldn't, and wouldn't ask him about his life. No, that would be secondary information for her.
"You seem to know quite a bit about angels," she started, "What were they like, in your world?"
Her method was to slowly dig. Over the week Lilly had done her own research on Lucifer, and mostly found that some circles declared him to be the Archangel that would become Satan; while other circles declared him to be the Anti-Christ; and still others just referred to him as a proud and haughty king.