The other thing that I would be concerned about is her PR appeal. I have no idea who Google employee 19 or 21 is, and I have no idea what she actually did at Google, except that it sounded important. Yet I've heard of her, would probably recognize her in a news picture, and remember her name.
I've had the opportunity to work with people who were very good at personal public relations, and based on that experience, I'm skeptical. Constantly selling your public image means that you can't be wrong, which always results in revisionist history and oddball situations.
Hopefully I'm wrong -- Yahoo needs help, and she does have a good story.