No she's not.
At least, not until she smears Bush.
Then she's toast.
But if all she's doing is supporting Kerry without smearing Bush, then my opinion is that it would be a smart idea to just leave her alone. My opinion.
I never heard anything about Mary Cheney smearing sKerry, yet she was called "fair game" just because she has been involved in the campaign.
(Not to disparage your having a higher standard, but in defense of those who consider the coyote ugly gates now flung wide open.)