Have you people noticed Sadhna's STRENGTH in this track? She is the ONE actually holding the entire family together, and at the same time taking care of Ragini.
She is keeping her cool ... and she is behaving as calmly as possible with the Inspector. The inspector only listens to Sadhna, as Sadhna knows how to speak to different people!
Sadhna (adorable, beautiful, oh lovely lovely lovely) face was filled with sadhness in the precap, and there were tears...when Ragini realised that Sadhna cannot be a part of that lie, saying that Ranvir is all well and ate the tiffin! But even from there they showed SADHNA TURN and face Ragini... And I am sure she will explain Ragini the TRUTH and give her strength (as much as Ragini can take).
Sadhna always kept her cool and took the best decisions till now. She will keep on doing the same in future. She is destined to be the core solution of all the problems in everyones life. HOW CAN SHE NOT BE CALLED THE BLESSING OF GOD? She is the central figure around whom everyone revolves...and thats why she is The Sadhna. Thats why the Bidaai Book of Mamaji was all about her =).