If she has still got a mouth full of cum, then no. Usually girls i'm with have the decency to maybe have a quick drink to wash it away, but i'm not really that bothered.
i LOVE it when a girl kisses me after i go down on her though, especially when she really wants to...
Another story on same kind of topic:
Once at a party one of my female friends gave me a blowjob and, with my cum still in her mouth, gurgled the words "shall i go and kiss someone?". And she went and made out with my mate.
He was pissed off for about 2 years. :1orglaugh