How would Bhavani show off to Sai?
Maybe they will put up a skit, how doomed they were when Sai left and how P brought everyone out of it. How grateful they are to P and how she proved to be a wonderful bahu, perfect for CN and V. Also some mention of Vinu in their lives and now it is time for them to give chiragh/waris.
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On the the positive side, Sai will come to know that V has suffered and he has been loyal and only married for Vinu. No she should not forgive him but she will know he suffered her "death".
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Who is going to say Sai's side of the story? She will not, and she discourages others also. It is great coping mechanism but also self-destructive. When you dont express your pain and say koi faraq nahi padhta, others take you for granted and invariably hurt you more. It is human nature, unless one spells out it hurts, they will assume all is well. Sai has objected to many things in CN, even acted out. But she never actually wept and spelled it out. She went a step ahead and took the blame that others shoved it on her.
Sai needs to learn to express her difficulties, hurt and sadness. Virat need to learn to read her without her expressing exclusively, even when she says koi faraq nahi padhta. That will be the growth for them.
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V is acting up and falling deeper and deeper in the mess, he wants to see some reaction from her. Mein kabhi sonchta hu ke mein mar jaao, ta ke mujhe pata chale ke tumhe faraq padhta hai. He used to be that desperate, he still is. He needs one sign, one break down from her, one heart to heart talk, all will be well.
Don't get me wrong, I love her swag, walking away with her head held high under these circumstances. She too is falling deeper and deeper in the mess gracefully, unlike V. And look who is benefiting from this mess. If you haven't it is P. Her plans are acing!! Aaj toh shikar khud aya jaal mein phasne. Exactly as she wanted and she is taking full advantage.
There is a poem by Iqbal "Makhda aur makhi " (translation of the link)
https://www.lincoln.edu.gh/uploaded/photos/News_Story_Photos/2011_October/A_Spider_and_a_Fly.pdf