If you want to go about it honestly, then you find out the fate of her appeal in high court and if it is dismissed, even then you have to wait for 90 days more the date of dismissal, as she has got a right to go to Supreme Court unde SLP. If you do not want to display such honesty, and if you have not received any notice from any court, you can go for next marriage 90 days or near aout 95 to 100 days (leaving the days for preparation of certified copies) from the date of decree. It is expected that the party against whom divorce decree is passed to serve legal notice on the opposite party informing his/her intention of going to an appeal. In the absence of receipt of such notice or any other notice from any quarter, the decree holder can lie down on flower decked bed after the expiry of appellate period, i.e., 90 days.