If you are certain that you don’t want her back, then file a report in the police station as soon as possible that she has gone to her parents house and taken all her istri dhan with her. Get a stamped copy of the statement and keep it secure. Also file at ACP, DCP and commissioner of police offices and get stamped copies. Don’t take this lightly. If she does file any sort of complaint, this will be proof that she has gone on her own without being forced out.
There is no time limit to filing of Sec498A cases. She can file it when she likes and most importantly where she likes. But divorce can only be filed in the place where both of them have last cohabited.