He blinked, then shook his head. A lullaby? She came out with some of the most amazing suggestions sometimes.

"No, thanks," he said. He hadn't meant to let her know that he wasn't tired. Deliberately, he ducked his head down and rested it against her shoulder, closing his eyes. He doubted he'd fall asleep, but perhaps it would allay her concerns so she'd fall asleep faster.

"Go to sleep," he murmured gently. "Or I might have you sedated." He was joking at the last, mostly.