She may be entitled to an annulment. She should see an attorney to discuss her options. But even if she is not entitled to an annulment, she can certainly get divorced.
Best of luck to you.
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Your friend should consult with an Attorney and get a divorce, if that is what she wants. She should not be affraid. It is unlikely that she will go to jail if she divorces him.
The above information is provided for informational purposes only and does not constitute legal advice. You should consult with an attorney on the specifics of your case.