Instead of living in that place that Prem found, why don't Heer and Meher just say that we have a perfectly good house, in great condition, which we own, where we can live
It's big, it's where they spent their childhood, and it's where they can feel like their parents are with them
And then ever Prem will realize that this is the Heer that he was meant to be with, and he didn't do anything wrong.
This way, they can also be away from Lallu and Family and Daljeet and family
Aaaaannnnndddd....
This way, just like K3G
Preet can go out looking for Prem, find him, and then with Meher's help, convince him to come back home
That would be perfect!
Yuks