Unless she used her official FB email to send these docs I don't see why it would be much of a scandal. Probably won't help her career progression at FB, though.
This is something that applies to managers but especially to executives: You are a representative of the company at all times. Especially in a communications role, you are the corporate mouthpiece. All of your actions are under extreme scrutiny and you should behave accordingly.
More importantly, Facebook has to deal with sexual harassment allegations internally on their own all the time. If this is supposed to be acceptable behavior among Facebook's executives with regard to accusers, then I as an opposing counsel in a lawsuit with Facebook would be grinning from ear to ear right now.
Odds are Facebook is about to settle on a handful of claims, even potentially-bullshit ones. And that's why shareholders should be out with pitchforks.
It is deeply immoral to do what this person did. I'm not sure of the specifics but I suspect it might also be illegal. (however thats a guess, don't put weight on that)
From a shareholder point of view, one doesn't want to have a person who will do something so down right nasty to protect the person they are serving.
