Shanti in Shanti sadan before Riya 's arrival

Hard to believe there was peace in the family before Riya arrived on the scene. Shanti would create scene and force everyone in compliance. Also how did Riya swap her groom, she was marrying Shivam. It was Sarla who schemed. Was Sarla innocent and was her visarjan because of Riya or because of Sarla 's act. All other people 's acts are conveniently forgotten.