You're right Nelly. I don't think the CVs have ironed everything out, but I think they've laid the groundwork. The pandit's predictions are not always immediate, it could come towards later in the show, but the truth will be in the form that will reveal Dutta's reality when it comes to family:
As you mentioned, it will be at some point about his "sisters".
It may also be about his father, Aai Saheb's relationship with his father, perhaps even AS causing his death? If he is dead at all...
Naku is merely the means by which all the truths come out in Dutta's life, slowly but surely. I think there are going to be many more twists, outside of the sisters. Oh, I hope he hangs all three upside down from a tree for a bit, scare the crap out of them, and throw them out of the house without their "worldly possessions." And is AS wants to join those evil daughters of hers, then she can. Good riddance. People deserve much better families than what Dutta has now, especially when he only has love for them, and he contempt.
It also seems strange to me that thee 3 sisters view him so distantly even if he is a "half-brother". There is no love. And if I did not know any better, I'd say they weren't even related.