If she refuses, he can claim that the ongoing Republican investigation, which is turning over a lot of rocks, is absolutely necessary!
On the other hand: if she says nothing, and it gets no legs in the press (which in King County it won't!), it looks like a foolishly futile attempt to grasp a straw - any straw no matter how implausible.
It has legs tonight... Lead Story on KING5.com... It will be the lead story tonight at 11 all over Washington