She's silent and looking up at him, knowing that it's probably a good time to shut her face, though hse can't stop her expression from twisting into one of those 'I've got something to say and I really want to say it but I shouldn't because it's a bad idea' looks.

Somehow, miraculously, she keeps a lid on it, until she's prompted to respond.

Even then she's not immediate in talking back - it's something she needs to consider, think on, dwell on and ponder over and totally not make an irrational decision--

"Okay."

Yeah. Totally thought long and hard on that one.

"I'll stay."