Sanjana plotted by Ashok

I beleive that ashok and param are behind introducing Sanjana . how will Sanjana get the pic. Sanjana has been planted by Ashok. He knows that shagun is th sister. Also he has access to the photo which is with shagun as she lives with him. See mrs bhalla also did not recognise Sanjana nor did Raman. They want to fool ishita and make her believe that Sanjana is the sister. They want mihir and mihika wedding to be cancelled. So Sanjana will get close to ishita and tell her some false story about mihir which will lead to mihika and ishita losing trust on mihir. Also if thei r plan works out Raman and family also will go against ishita' for spoiling the wedding and spreading wrong news. That way it Will be. Ek teer do nishane.