It was previously stated that Savi would never be able to bear children of her own and that society would therefore view her as infertile. She won't be able to handle the thought of living alone since she will be so lonely.
As her son Rajat is a single father, Mrs. Thakkar was previously raising her granddaughter by herself. Since Rajat doesn't want to look after his daughter, Sai will grow up to be perceived as an extremely lonely youngster.
Ishaan and Savi were about to start a new life after their marriage but Bhanvar spoiled everything. Savi’s life was shattered after Ishaan got killed in Bhanvar’s attack but before his death he asked his parents to look after him.
Ishaan and his family get hostage by Bhanwar and his team. Bhanwar blackmails Savi to get married to him or else he will kill the entire Bhosale family and the guest present there. Still, Savi acts smart.