I doubt she’s losing a moment of sleep. Her campaign has already decided how to spin it to the media. And any prosecution would only take place long after she was elected.
She will do anything to get elected, including break the law now and deal with the consequences when she’s (oh, God, NO!) president.
The Clinton's created "broken glass Republicans" - people who will crawl over broken glass to vote against Clintons.... count me as one of them.