[There are a few jokes that come to mind when he asks, but none of them come to her lips. Probably for the best really.
As much as she likes older guys, there is something about this situation that makes her feel like she's kissing her Dad. Slightly less emotionally loaded than that, but still up there. He is Reid's boss and he gave her a pretty good talking to the first—kind of second—time they met. Kissing really wasn't meant to be on the agenda, but here he is asking if he can do just that and she is nodding back her approval. There is even a little head tipping as she leans in a bit.]