sunsawed wrote:
Her whole game is trying to convince Mark she is the Mole over Craig.

As far as strategies go, you really only have two weapons at your disposal: (1) figure out who the Mole is, and (2) make others think you are, or some other Player (that you know is not the Mole) is, the Mole. Even if Nicole wasn't certain whether Mark or Craig were the Mole, if she gets Mark to vote straight "Nicole is The Mole", she should win just by splitting her answers.