She could hear it in his voice. See it in the way he clutched their son. Something had happened. Something big. And she didn't know what to. The was likely nothing she could do, but she wouldn't know until he felt like he could tell her.
"Didn't say you had to." she told him softly, "Just rest. Sit, have your water, watch him sleep for a while." Heaven knows she'd had plenty of sleepless nights doing just that herself. "Just...try and breath for a minute. For me." She didn't say it but all she could hear in the back of her mind was that little, nagging voice telling her that she was going to lose him again. That he would be back but so broken that he'd just disappear again before her eyes. That she wasn't enough to keep him and she'd lose him all over again, not to the island or the station or whoever was in charge of them but to his own mind and the wills of someone with nothing left.