Nicole is too vocal to be the mole and stands out way too much.
And that is why she is perfect. Every mole to this point has been quiet, mysterious, laid back. This would be a perfect time to have a mole be a little bit more outspoken.
The reason I'm looking at her is not because of her behavior, but what role she plays in each challenge. Previous moles have played key roles in missions, they had to be in certain places. Nichole, because of her outspoken behavior, always is in the group she wants to be in and nobody tells her no.
My conspiracy theory...She was also the last one to bungee jump, another very key spot. This gave Jon the chance to tell her what every body else bid so she could "steal" the exemption if needed. Since it was not she could make up any number.
I've stopped looking at behavior and sabotage, everybody does this now. If you hurt a game then suspicion is placed on you. If you are not the mole then you will redirect somebody else's attention and get them eliminated. Great strategy, but therefore you can't really tell by behavior who is the mole and who isn't. You need to look at what role each person is playing in the games, do they insist on certain roles, do they recommend others for roles, that sort of thing. It seems, to me anyway, that Nichole is orchestrating this game more than any other, getting people to play in the roles that she wants.
Just my opinion. Probably wrong, I was on the first two moles shows. LOL.