Sorry to hear the case.
What month did your Cousin got married? And after how many months did she leave her husband?
Everything matters in the Court of Law.
How to prove the potency test? The court will order it for a Government doctor and he will check and submit the report.
The other party or the advocate also might question is your Cousin Virgin? Are you ready for the test?
498a and 420 cases will take long time. Filing false cases will take you to jail if not properly proven.
Everybody wants quick justice or judgments, but Courts takes their own time and they are delay centers.
At last Time Wins.
498a is a criminal case and this will have lot of effect on the other party and Ego will be definitely hurt.
I would suggest with draw the cases; go for MCD, whatever happened as happen. If they give alimony or maintenance take it. Once you with draw cases they will give all your stuff back, settle the matter amicably with elders and relatives.
If MCD is not possible, nobody will go little down and you will be roaming courts forever. Think about it.
Again your Cousin wants to get married right? Now we are in 2015, already 3 years have gone.
The reason I ask is if you have gone through forums, different people suggest based on postings and this is my view. Remember I read your whole post and spent some time to write my view which is 2 cents.
Please excuse me if my post was direct.