Dear Querist
engage a lawyer and checked the status of the cases, it may be possible that the matter has been proceed ex-party,
fight the case on merit and she will not be entitle to get any maintenance from you or any other relief from the courts in which the cases are pending until and unless you do not appear before the court or the court proceed you ex-party and passed any order against you.
there is no mandatory requirement to came back to India and fight the case personally, you may fight the case through your counsel and Power of Attorney Holder.
In Domestic Violence Case, you parents(if they are party) then they may file an application U/s 25(2) of Protection of Women from Domestic Violence Act-2005 and claim that the name of your parents should be deleted from the arrears of parties as there is no domestic relationship between them and her, as per your information, only when you came to india you went to your parents along with her, it means both of you were only visitors and not reside in domestic relationship.
the summon can be served to any adult male person of the family, so if once your parents received the summon then it may be presume that the service of summons has been completed.
Feel Free to Call