Looking for advice / information about unwritten rules in punjabi arrange marriage

My marriage was arranged we are not cousins but our families are tied together with relations like my mammu wife is the sister of my wifes father

About her family

Her father passd away

Her elder brother is married works in italy is shareef admi in short he is simple

Her younger brother has anger issues and is immature in making decisions or control his emotions

She has mother and a married younger sister they believe what evr my wife says

Our issue

Well in short we had severe arguments and bdtamazi from both sides about our kids health blaming fight etc

What she did

She went to her family home in another city in middle of the night

And blocked me from every where

She did how ever asked a guy in her family to call my family and inform them that she is not happy there and ended the call

Then she involved her 2nd brother to call me and threaten and also solve the issue ( i couldnt get it what he wanted)

What i did

I called her elder brother

The next day she went to family home

I begged him ky smjaye usy aur wapis bhejyn

He said chotay ki shadi hy septembr

Hm pakistan ary hyn ub beth ky bat hogi

I waited

He came i asked my brother to send a msg about whats thier plan and invited them to a function here

Her brother ( by the way my wife is controling him )

Said no we cant come apko e ana prega aur beth ky bat krlety hy jo bh hy

My family involved a third person and asked them if they are ready to send thier daughter to hm ajaty hy

They or my wife refused

Ub september 18 ko unky chotay bhai ki shadi hy

I have been voice noting her elder brother asking him to make her understand that our lives will be destroyed that i lover her very much

But no response

Mje arrange marriage ky rules ne pta

Her family is not so educated wo log dehat ky hyn joint family me rhy zra poverty me bh but ub ne

Ub unky kia rules hy wo kia chahty hy mje kia krna chaye kch smj ne ara

My family is supportive lakn wo log keh ry ye 2nd time hora hy what you want us to do

Please some one guide me kia rules hy unka mindset kia hy aur mje kia follow krna chaye