"But —" She might have just rushed out (Lee has a strong sense of Not Wanting To Get In Trouble with even ill-defined authority figures, awkward considering how many war protests she's gone to this winter alone) until he touched her, and then her resolve weakened and she finds herself scooting a little closer. What, she's been alone all day, she's been bored and lonely — she could have gone back to Chelsea but nobody she knows there is awake until one or two in the afternoon and she's not up to talking to strangers today. "You don't have work to do?"
It's half-hearted at best. If they get In Trouble (whatever that means) she's just going to have to pin it all on him.