Didnt you see the flash back of Babu's entry, the lense sequence etc...and i am not generalizing the whole thing. its just that the track is an unnecessary one with no clear logic of it..
Maai is the most stupidest and dumbest character in the whole serial... she herself saw Vansh's dead body and they did the final rituals etc when vansh died and now she is still believing this liar.
it only makes us feel that they are short of story to run the show and hence bring in unnecessary sequence..