Need your advice in my sisters DV case.

Hi, Need your advice in my sisters case. she got married last year.We came to know that her husband had a another female in his life, when my sister asked for the clarification regarding this her husband is saying she is his "Rakhi Sister". But looking at his overall behaviour it doesnt seems to be what he is explaining. The day my sister discussed about this with her husband he started torturing her physically and mentally. We have also supported this guy financially in his business even my sister morgage her jewelleries to a jeweller to raise the additional funds. Now this guy is denying with this and asking for the divorce against the morgage jewelleries. Hence my Sister has filed a Divorce and DV case against this guy. Intially he came to the court for few DV hearings but from last 4 to 5 hearings he neither his lawyer is apperaing in court, hence we are just getting the further dates. Please let me know what court action can be taken against him, after how many absentism court gets the arrest warrant or gives one sided judgement? please advice.