Really? Not with any company I've worked for over the last 20 years
As a rule big companys don't like to hire people who may be percieved as trouble makers. If for example she was forced to testify etc, then that is different.
If it was a personal choice thing then it depends apon perceptions of what she said. If it comes across as corporate bashing then they won't touch her with a 10 foot barge pole. In the end it will come down to the HR departments perception of what she did.