Judging from the Kala n Kishore scene, what Cvs portrayed was two people who loved each other but can't seem to see eye to eyes due to differences in beliefs. This happens to a lot couples in real life.
I don't think there is going to be any Greek tragedy here, coz the Indian tele audience would have a hard time accepting such a thing. Then again Kala's blood relation with Dutta is questionable, so Cvs have left the option open I guess.🤔
Kala is like no other puppet master behind the politician. She wants absolute power, which clearly has corrupted her to an extent that she can't seem to see anything else. Power and money can consume anyone until we forget ourselves. In this case, Kala has always played the concerned unconditional loving sister to Dutta, thus has affected him that he doesn't see her real colours nor does he see her true intentions.
Supposing if she had chosen the girl for Dutta, who she can turn into her puppet, she wouldn't react the same as she is doing with Naku.
She knows that deep in her heart that Nakku is much stronger and could change the dynamics of her relationship with Dutta. Then of course, if he has children means the money would split into many portion, so obviously she wants her constantly MIA son to inherit everything with her being in full control.
Hmmm I think I might like the character of Kala a bit more than I should 🤔😕