Please find my replies as under:-
1> Chatting is preserved ( brother's family is having her mobile in custody )
This is an evidence but the other side will say that this has been fabricated by you. since mobile is in your custody. Keep this mobile safely. Check which are the dates on which the chatting has happened. How did you get hold of this mobile. How did you confiscate this mobile. Who confiscated this mobile and how. How did you get to know that there are chat messages in this mobile. Prepare a detailed history of this episode and keep it ready.
2> Audio recording of the complete family is present with us where they all are admitting to the bad things that her daughter had done & were crying like anything. Confession of the girl is also present with my brother.
This is also and evidence but the other party will say that they were under pressure. However it is for your advocate to handle this issue.
3> Our side had not accepted any dowry , & are ready to go through Inwards & outwards entries of accounts. They mentioned the dowry is given when our family demanded for SUV car & 15 lacs were given in cash.
What you all think is it easy to get divorce under these things where we have all the proofs intact with us i.e chatting where the girl is involved in adultery & is in relation with 2 guys at the same time post marriage , & with the audio recordings which we have where the girl is confessing to it?
This is no proof of adultery. Please show these to your Lawyer ( who will give you a better Opinion). Chatting with one or multiple guys does not mean adultery. Although you will not find a direct proof of adultery and it will be difficult to prove.
I am also cautioning you of one fact " Each Story has three sides, Your side, her side and True side". You are telling your side, she will tell her side and after listening to you the court will decide which is the true side of your story".
As on date things looks better for your side, however take advise of your lawyer.