If nandini is the killer...

then it is good, i know that i might be sounding a little weird but the truth is that what's the point of her living, she's lost everything, now she might be in control and she is thanking tanya and taking care of karan but for how long will she keep on doing that, whenever she'll look at tanya she'll see a sautan in her and when she is with karan she will think that he is a dhokha baaz and she just can't live for boomi who doesn't even call her mum she has already sacrificed everything for her first getting into coma because of her and now staying in shantiniketan for her she is the root of all the problems, in my opinion! if she is the killer atleast she will stay away from all these!

that's my opinion!