The ending makes it look like a wedge is being created between the mother and her precious son, or that it will reach its ultimatum at some point - if DK managed to succeed in his last try.
The fact that this is his last try makes me think it's going to be something really big and quite shocking. Or at least he will try to make it. I'm quite pessimistic about this and don't want to believe that Sandhya is safe when she maybe isn't, otherwise I'll be disappointed if she does get caught out - therefore I'm thinking that perhaps she MIGHT get caught out.
Where has Damodar gone though?! And I want to see a bit more of Neeraj :P I'm glad Sandhya hasn't told Sarla that she heard her conversation. She seems to be trying to drive a wedge (sorry about how many times I've used this word ha) between DK and Sarla, and perhaps it's working. Afterall, Sarla has no idea that Sandhya knows her true colours!