Possibly. Or perhaps they just want to get to the bottom of the matter. In either case, if she did nothing illegal, then she has nothing to worry about.
Try telling that to Libby.
Every salvo has been based on eye-of-the-beholder style crimes backed by nothing more than eye-of-the-beholder evidence.
I haven't tried the experiment, but I'd assume that if you sent in, for a career job, a resume that mentioned your party affiliation, it would be the subject of a lot of merriment before it was crumpled and pitched into the wastecan.
Is it so hard to appoint qualified people and use THEM as pawns of the White House? Assuming it's the mastermind angle, that's all the White House would've needed to do.