Peter frowned. "I know the boys goof off in class, but it's usually cause for a fun story from you, not something you get a headache from. What was different?"
He slid his hand into hers. "I noticed you were eating more. I think my mother suspects you might be pregnant and she's trying to work out a diplomatic way to ask me about it."
The touch of humor, he hoped, would make her smile before he went on. "Sarah? How much weight have you lost?"