He thought about turning away, about telling her that she was more apt to catch flies with honey than vinegar, but his original assessment of her was still fresh in his mind and proving to be accurate - she wouldn't give a shit and would probably just rant and rave at him until he left.
Also, he was terrified of angry women. Terrified. And this girl was two seconds away from directing her anger on him and he didn't need that kind of bullshit. He stood up and silently grabbed a large handful of napkins from the dispenser and even stopped to nab a damp rag from one of the baristas. He returned to Crea and wiped off the laptop so he could set it out of his way. Noticing she made no move to clean up anything herself even with the presence of napkins, he silently held out the damp rag for her.