Jo still didn't look entirely happy and she glared at Mary, but then she finally shrugged and admitted defeat. As weird as it was, she also thought that it was good to see someone finding a little piece of happiness in this place. Especially when that someone was her family.
"I'm done," she agreed. "I'm going to go look for Dean. You two..." she stopped and shook her head, because ordering the two of them to behave just didn't seem right. No matter how maternal she'd been feeling toward Mary lately.
"You know what, just keep an eye out while you're exploring. There's no telling what surprises are on this ship."
She nodded to the pair and then turned and hurried off, preferably before Mary noticed the fact that Johnny's lip was starting to swell a bit, and so before any shouting might start.