Emotional Blackmail And Forced Marriage

Hi Madam/Sir, My girlfriend is of age 25 has been emotionally blackmailed by her parents for the last few months and forced into marriage. They threatened to commit suicide if she doesnt agree to the marriage or if she tell her in laws about her disinterest. The hindu marriage took place on Feb 13 th this year. On 18th Feb, Four days after the marriage, she even informed her husband that she is not interested in this marriage and requested him to leave her. But he insisted on not to let go her and also he and her parents have forced her to take the marriage certificate as well. They threatened that if she is not going to take the marriage certificate she wont be coming to Hyderabad. She is a working professional in Hyderabad. As she signed on the marriage certificate they are bringing her back to Hyderabad on Tuesday. Can you please give us a legal opinion on what we can do about this issue.?