Nope, and that's not necessarily a bad thing. She is still relatively "new" and establishing herself. She has plenty of time to do something risky to make a statement. Right now, she's giving the public what they want, and that's fun, accessible pop tunes.
IMO bringing out I Kissed A Girl as her first single was a risky choice. The last time somebody released a lesbian-faux single it was t.A.T.u. and there was huge controversy and backlash from the media (although that was mainly down to their age and the video).
Not really. Pretty much all of her singles have been tailored for radio with the exception maybe of Thinking Of You. But I don't think that was a risky song either. If she follows through and actually delivers a dark era next that'll probably be the most risky thing she'll ever do.