Hi Payal, i have come to CB forum.
I guess Dev would not be able to talk because pandit will say that muhurat is getting over. They will certainly end up in marrying. What about putting sindur? Does dadi not know that at the time of putting sindur the face of dulhan will be opened in front of everybody?
Now i am getting a bad guess. At the time of putting sindur, Radhika's face will be revealed in front of everybody. All hoo...haaa..... then dadi will start scolding Rads and tell everybody that Radhika deceited them. Meanwhile Vishakha will come back and they together will cook something. So Radhika will remain without sindur. But since phere and all rituals would get over she will accept Dev as her husband.