Nope... she's only been with two or three guys, and has told me that she'd never had an orgasm from oral-sex before (not sure how many orgasms she had, period)
Could it be that she's still not very comfortable with this specific sexual practice? It works, she likes it (at least, you say so) but she's not completely relaxed...
Once she catches her breath she typically just giggles in hysterics, swears, and (playfully) berates me.
This is something I would do if I was trying to, uhm.. 'break' the atmosphere. Don't know how to say it in english, but something like moving from being sexual to being playful. Well, talk to her (if you did not)!