I am not an advocate, but here is my 2 cents advice:
The crux of your entire question is in the following statement:
"Now my wife is planning to take the DV case back for reasons best known to her."
While it is true that any case can be withdrawn, the process and the manner in which it is done have implications, and sometimes very serious ones. The legal question to ask is: Is a DV case compoundable? As DV itself is not codified under any section of Cr.PC and/or there are no judgments to my knowledge on whether a DV case is compoundable or not, withdrawal is a gray issue. In general, there is no straight answer to the question: Can a criminal complaint be withdrawn? For example, if you witnessed a murder of a person, can you go and withdraw the complaint? Clearly not. Therefore the law provides for the notion of compoundable and non-compoundable offenses. DV is a quasi-criminal so whether it is compoundable or not is a grey area.
There are also many judgments to say that once a wife withdraws a complaint after filing it, she effectively condones the allegations (even if they are true) and therefore the same cannot be realleged later. Please check for this with some knowledgeable advocate...
In western jurisdictions, withdrawal of a complaint usually attracts res judicata defenses from a civil perspective, unless the Judge dismisses the complaint "without prejudice." Doing so "without prejudice" enables refiling. As CrPC and not CPC is applicable to DV, I am unsure if res judicata defenses can be applied if she refiles the same. See if you can file an application asking the Judge to have the withdrawal be with prejudice (so she cannot refile). I doubt that is possible in our Courts but again check on this aspect.
As for any application filed by you in DV case, if I am the advocate of your wife, I will argue straight away that there is absolutely no provision in the DV Act to grant any relief of any kind to any man, let alone the defendant or husband. I do not know how the Judge can grant you any non-procedural relief of substance under the DV Act. The only relief that a man gets in a DV Act are procedural applications (e.g. calling a witness, asking for some documents to be presented, etc.) OR the denial of any relief sought by the woman against him. Nothing more. There are other Acts under which you can get relief from your wife. DV is not one among them.
I have given you some pointers for thinking. These are not definite answers.