Forced marriage

First of all my gratitude to all the intellectuals in this community who helps the needy one with their legal advice. I am seeking for the advice for my female friend. She is a hindu girl from delhi and belongs to a rajput "chauhan' family, doing a govt job temporarily based as a teacher. Her parents forcing her to marry a person which is 6 year younger then her. As she doesn't want to marry him she said to her parents so many times but they refused her, even her father slapped her and her brothers threaten to kill herself. As she told me the exact sentence her brother said " Go and hang yourself". She is mentally distressed now a days and don't know what to do. Her parents and now relatives pressurizing her daily for the marriage. The boy who they select for the marriage is 25 yr old. One main thing her parents didn;t tell the name of that person till now she has done some research on social sites and found the guy, but the guy she told me greedy in nature as she is in service, he want to marry her on the basis of her job. please guide me what we can do in this matter. Regards Saif