Mattie was trying hard not to doze off, but it wasn't easy. At times Nicholas' breathing changed, but it didn't sound serious. It simply sounded like perhaps he was dreaming, and different subconscious stimuli were changing his heart and breathing rates. Not that she knew all those fancy terms. And not that she could do anything if it was more dire. She just wanted to be there. 

She was slipping away when a cry of pain made her jerk her head upwards. She was up in an instant and prodding Nicholas roughly. "Wake up!" she said, and shook him for good measure. She might not have been so aggressive about it, had she gotten any real shut-eye. But it hadn't been an option. And now she worried excessively.

She glanced at Cole. Sleeping like a rock. Good.