Trishna is making a grave mistake by hiding the fact from everyone that after 20 years Ballu has returned to their lives🤢. Now, only Trishna knows that Ballu is in Mumbai. On the other hand we know that Ballu has also found out that all of them are alive. I can understand that she didn't tell Padmini about Ballu's return because she didn't want to give tension to her but she should have informed about it to Shamsher and Roma. If Shamsher had known about it, then he could have taken some precaution against the danger. But now they are all in the dark and unaware of the approaching menace.
The thing that really hurts me is that Trishna never understands her faults and prefers to blame others for her misfortune and trouble. So when she will come to know that RK has brought Balraj as the producer (though RK didn't know anything about him), then like other instances she will surely start blaming Madhubala and RK for the entire thing.