She feels a little bad for how he shivers, knowing she's responsible—but she feels herself warming up as well, so it's okay.

"You don't have to thank me," she counters, shifting to get a little more comfortable. She's exhausted; her eyes hurt. But her mind is a numb, loud buzz. She can't rest. Absent-mindedly, she combs her fingers upwards, through Lauren's dirty hair to rub his scalp a little. She remembers as a child, her mother used to do this sort of thing for her when she was stressed about her studies; it had always done well to calm her.