Jo wasn't sure what to make of the kneejerk reaction of the man with red hair that Maxine seemed to think was her dad. She did her best not to shoot the man a glare and remained quiet once she'd caught up to the pair, there for support but waiting for Maxine to respond.
She knew full well that the City could draw people in from different timelines so it was fully possible that this man was Maxine's father but not yet in the time that he was from. And did Jo ever hate time travel or anything even close to it.
She put a hand on the young girl's shoulder, giving it a gentle squeeze as if trying to remind Maxine that she wasn't entirely alone here.