From what is being said by Sai for not accepting Virat, she is putting forth the fact that she doesn't want her son to suffer the pain of a broken family. But she is WRONG!!!
Vinayak will suffer more if she leaves him with Pakrat in Chavan Nivas,
Vinayak is a child who had already been through a lot of mental trauma and right now he will just go through more by seeing his parents constantly fight with each other.
Virat is surely not happy to stay with Pakhi and wants to give her divorce while the latter will not allow him to do it.
This will lead to a lot of fights and disturbances between them which will infact affect Vinayak's mental health.
A child will never be happy if he grows in an environment with parents constantly fighting with each other.
So if Sai really cares about her son then she should take him also along with her.
Or Virat who is a police officer should know how traumatic Vinayak's life will be if he stays with him and Pakhi,
So as a good father Virat should sacrifice his son and give his custody to Sai.
That will be the BEST for Vinayak.
Otherwise Vinayak is going to live hell life in CN with Pakrat constantly fighting with each other.
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