I started watching EMA since January so I do not know who Prem is? I think he is Kapoor's son.
So now if the CV;s are pairing Pakhi with Raghav and Kalpi with Prem then what will the Kapoor's lose even if Raghav takes his revenge? Nothing, He might take away their property. But both their kids would have got good and rich spouses(Kalpi is going to make it big). And for any parents their kids happiness come first. So even though they have committed so many crimes, they would still be happy.
I do not think the track is going the right way.