Exactly even I can’t understand why some folks are trying to find reason of Sai not going back. V was very clear and also the worst was when he blamed for Samrats death. I am not ready to forgive.
Also Sai is no more the positive person, she had a healthy pregnancy with Savi looks like that means she could have had a healthy pregnancy the first time around. The stress that she constantly lives in is not good. Aud have the full picture but Sai be like such a big accident happened and he didn’t even come to find us, like would she have just given up seeing a Part of cloth ( all this based on what they show). Even this big a thing happened and still he isn’t ready to come for me is what played in her mind, his words and actions just showed how meaningless she was to him. So she wants to keep her child hee only solace to herself, cos she knows how it is in CN nowas , they snatch every bit of happiness she has. Situation is sad, but I don’t blame her for being selfish, when she was tossed around like trash and used like a punching bag for things that’s not her fault esp the last track.
See she tolerated paapi snatching away things cos her child was growing inside her, she was dreaming about after the child coles and she can have all the time to herself, but her trust and belief was broken when no one in the family said anything. And the one person she loved called her names and didn’t stand up for her.
Maybe more will be revealed in flashbacks.

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