I am not sure what going to happen, but I noticed that Nisha was furious to see Mihir and Purva's tender moment. There is strong possibility that she will cause chaos between her, Mihir and Purva, since Nisha is a very spoilt person.
But I wonder if she will succeed her plan in causing the rift between Mihir and Purva because they are two people who share so much history between each other and know how much they love each other since they have experienced the feeling what it would do to them if they lose each other. Mihir and Purva have soild relationship and strong trust in each other.
And I think Nisha would create a rift between Smriti and her father if she come to know that Smriti is Purva is younger sister to get revenge. She might even get her father involved in process of runing Mihir and Purva, since she is such a daddy's girl