In the movie kasoor Aftab tells Lisa that it's not that he doesn't love her. It's just that he loves money more. So if for the sake of money I need to kill you I will have to kill you and I will kill you.
Same is the case with D. It's not that she doesn't care for Virani's family and business. It's just that she cares for BB's business more. So she will work in the interest of BB's business even if it hurts the business interest of her husband and in laws i.e., VV and IMV.
And would still keep maintaining what a good bahu she is, a perfect woman who when outside is a businesswoman and not a bahu and hence will not shy even from hurting her in laws business for the sake of her business. And when in home is a bahu not a businesswoman and hence even if she is coming after destroying her in laws business, she won't bring work to home, act all sweet and good and be nice to every one. So that even if she is not working in the interest of her family's business but going against it instead, she is still regarded as a wonderful bahu.