My sister is having a problem with her husband.For the past one and half year she seperated from her husband and she is living with us.She parted because my sisters husband cheated on her and he is illegally living with the other lady .rescently he sent divorce notice .He is insisting her for acceptance to his2 maariage .So my sister put a complaint saying he is forcing for the 2 marriage and a case was booked under domestic violence act.Now he is living with that lady in another town .Can we book a case on him/her under brothel act??Is it advisable ??how we can proove that he is guilty ??My sister still wants to live with him .Please suggest what action should be taken|||