She's a nightmare to watch on the feeds. Not only does she rarely shower or attempt to make herself presentable, but her persistent babbling is a nightmare to endure on the feeds or BBAD.
Yet nobody has played the game as ruthless or smart as she has. No matter the situation, she has come out smelling like roses (insert lack of bathing joke here). When her main ally, Jessie, was eliminated, it wasn't more than a few hours later that she was downplaying their connection. When members of the other side have been put up, she makes sure they know that she had "nothing" to do with it. She boasts about her "honesty" constantly, but it's her "last minute lies" that has saved her the last couple of weeks. Even her friendship with Kevin the last couple of weeks has been more out of convenience than any real connection, and she's great at feeding him only the information that helps her game.
Having said that, though, the fact that everybody buys into her bullshit says more about intelligence level of the others than her own gameplay. Time after time, she's one honest conversation away from having her whole game undermined. Even last night, Jeff and Michelle were well on their way to solving the Natalie riddle when Jeff's self-pity suddenly derailed the conversation.
I'd hate to see her win, but I can't say she doesn't deserve it.