1) Case under 498A: We need to know whether there is a non-bailable warrant pending against you. If you are not aware of the details, your advocate can get details of of any pending non bailable warrant and get the same withdrawn either in Sessions court or at High Court. The court at the time of withdrawal will also grant you regular bail if a NBW is pending or if there is No NBW pending, you can get an Anticipatory bail / Regular Bail from the court. Till such time the NBW (if it is issued) exists or till such time you get an Anticipatory bail/regular bail, you should not come to india under any circumstances. If your advocate is not supporting you in getting any or all of the above, i think you should change your lawyer who is competent enough to get things done for you.
2) Divorce Case- if your lawyer is attending the court, then it is fine. You can also grant a power of attorney to any of your family members who will regularly attend court proceedings. You will be required only at the time of evidence stage. So in order to ensure that there is no ex-parte decree, care should be taken to ensure that your lawyer or your family member is present in the court whenever the hearing is due.
hope this helps.