What makes you guys think Rousseau avoided Smokey? Claire has all the same signs she did when they first met (right down to the obsession over their children). Like Claire, she was able to be reasoned with if she had a reason to trust someone. Claire's just a bit more aggressive because she's being actively hunted and recently tortured by the other Others. Rousseau was largely left alone which more than sufficiently explains the differences in their violence.
But in no way does it even suggest that Rousseau wasn't in contact with Smokey. (Doesn't suggest that she was either, but that's my point.)
