It is my opinion that Naku's pure heart comes from her mother Babi. Babi is loving, loving and loving to Naku. When Naku's heart breaks, so does Babi's...and it is sad to see Babi's feelings of guilt.
I am going to say one thing: The extent to which Babi went to protect her daughter, in my opinion, was WRONG. I understand the trauma Babi has had to endure with her elder daughter, and then with Naku and Morey, and the role of idiot husband Ganpat (hands down, he is generally a selfish, stupid man. While I am grateful for his help with saving Dutta, he did it to save Dutta, his meal ticket. There are no honorable motives in Ganpat's inner armoire).
Yes, Babi did what she could...to make her daughter look unattractive and thus, fend off men who would destroy Naku and Naku's future. The extent Babi took it to-- (I even hate typing this but I think it needs to be said)-- to make Naku so ugly that it would not only fend of interest but also invite ridicule WAS wrong. Babi was desperate, I totally understand her motives for it, and they are totally honorable. Some of you may also question my saying "so ugly", but yes, that was Babi's intention with the unibrow, black soot makeup, everything.)
But, I will state again, that I believe Babi was wrong in how she handled it. It's one thing to make Naku unattractive, it's another to invite loads of ridicule on her. Thank God Naku is a strong, principled, loving girl. What if she had not been so strong? What if all those words had wounded her or made her doubt men even if they did fall in love with her? These are not far-fetched thoughts. Most girls would be hurt, even if they could not express it.
So what I am saying in my convoluted way is that Babi could have found a medium ground. Not to push it so far to the left that the makeup became like a prison cell for her daughter. Move away, go elsewhere, make your daughter slightly unattractive....just don't go so far in doing so.
When Babi feels guilty, I think that is right...while Naku does not blame her, Babi knows that deep down she has changed Naku's life for not only the better (no horrible men exploiting her) but for the worse too. What if Dutta was not the type of guy who valued love so deeply? What if he was more like Baji and many men who look at the outside? So was Naku going to go on in her life, trying to find a man who will prize her most for her inner beauty only and ignore everything on the outside? What is the probability of that?
It was an awful choice Babi was forced into making, and I don't think it was wrong. I think how she went about it was wrong.
These are just my thoughts on this matter. Yes, looks are not as important as the inner person...there are enough beautiful looking people who are soot-covered on the inside...cold and mean-hearted. But looks do matter to some degree...it should not determine whether relationships happen or not, but as Mishal honestly said, looks do play one part, even if it be small.