She merely settles back when he adds himself to her fire build; she may have had other ideas on what she was going to do, but she's too tired at this point to argue. And, well, there's something to be said for teamwork.

She watches him as he nurses it to life, finding his tenderness towards it a little surprising - especially given their tempers earlier - and endearing, like someone's coaxing a kitten to eat. She's not quite smiling when he's successful, but her expression isn't as harsh, perhaps even a mite tranquil.

Once the fire is well on its way, she reaches a hand out to his shoulder and leans down slightly to be more on his (strange) level.

"Hey, thanks." It also serves as an apology for fighting earlier. The rain has slackened but it's late enough and dark enough that they're in for the rest of the night.