I am just gonna appreciate the fact that Sai never lies even if the odds are against her favor. She could have easily made up an excuse and left the house, but she didn't. Even when Usha lied, she corrected it. She is essentially an open book with no secrets. She had that open discussion with Virat before the wedding so that she stays clear from her end. She knew that Virat will regret it if he gets married to her out of his emotion, and that is exactly what had happened; however, we weren't expecting to see it so soon in the marriage. She was calm and collected to have such a serious discussion like that soon after her father's death and committing suicide. She even made clear to him in the car that he still has the time to make a U-turn and that she doesn't want him to make a compromise to one promise for another. She has been clear from the get-go.
I see so much guilt building up in Virat when he finds the truth. If he still doesn't realize how mature Sai is after all this, then I am sorry, he really needs to go to demmak ka doctor and take PP with him.