She probably didn't want to get them fired. But it's hard to argue that she didn't want to cause them real damage, at the very least to their reputation. And it should be plainly obvious to someone with a media presence that anything negative they say about someone will ripple well beyond that person's own realm of control.

Everyone says things in private they wouldn't want their employer to hear. People curse outside of work. People drink and smoke. People break the law. They don't get fired for it because there's no one taking pictures of it and blasting it across the Internet. What we have here is irresponsible disclosure. You might not be able to forecast the full effect of such an action, but you have to know it's not going to be good for anyone involved.