Here is how I see it.
1. Suman has been so wrong in what she is doing.
First she has fallen in love with Prem--and who can blame her--he is a great guy. Her main problem with this whole relationship is that when Prem told her he loved her she was unable to tell him that she did too--WRONG! Also here she was unable to tell him what kind of problems she was having--her father's whole financial problems, etc... If she had told Prem what was in her heart at that time he could have helped her--as he did when her father was in the hospital. Prem loves her very much and I am sure that he would have helped her with anything she needed.
Second why does she not listen to her sister. It seems that Suman can't do anything on her own and Chatali is the smarter of the two and she looks out for Suman. It would have been good if Suman would have really done what Chaitali said and called Prem when she should have he could have talked to her dad worked things out. Now he has to cut his studies short and come back and maybe even that may not work and he will have to suffer.
Third Suman should have talked to Rajeev at any cost and explained everything. He is such a nice guy and he would have understood the problem and helped her. Now Suman suffers by not loving Rajeev. Rajeev suffers by not knowing that Suman does not love him like he loves her. Rajeev's family suffers not knowing anything that is happening. Suman's parents suffer as they know that they have done wrong by marrying her to someone that they like and she does not. And finally what happens to poor Vishaka? She can't be with the man she wants and maybe if Rajeev had not met Suman, then he might have loved her.
As you can see Suman has really done wrong for everyone and she is not as dutiful and traditional as she claims. It is okay to not be traditional and so homly. Suman can love who she chooses, but when she makes up her mind she should stick to it. She should follow her heart and be true to the one she loevs. See the mess she created!
It will be hard to see if this all comes together as she wanted. As the new promo showed she married Rajeev and the pundit says that he will die after 6 months--what good is in that? Everyone suffers here in the end. WHAT A LIFE SUMAN WILL LEAD!