First-
In yesterday's episode(5th dec) i saw nikhila wearing Gauri's blue saari. Kya saas aur bahu donon apne saari bhi exchange karte hain? And as for Gauri, She is also wearing the same blue saree in most of the episodes. When she proposed Shiv, When she tried to apologise to Shiv and many more. Can number how many times( i dont remember actually). But i am sure she wore it many times.
Second-
I think Mahen is innocent and he doesn't know about Nikhila's evil plan. Even Shiv doesn't know that his mother is doing all these things(i think). And my only doubt goes on Ipshita. I think she is there with Nikhila.
Anyways I am waiting for today's rocking(may be) episode. I've kept my fingers crossed for a good climax of this mystery.And please post ur comments and opinions on this topic.
LUV NANDINI