I decoded Sandy's mystery..

I think she is just an employee who got so much importance because before Nirmala there was no female in the house so they treated her like family and kept her there to look after the family, and she was orphan so there was no problem. maybe Sandy wanted to marry NK and settle in, but Dadu got NK married to Nirmala, and this ruined her plans. So Sandy manipulated Nirmala and in the name of friendship she never let Nirmala take control by demotivating her using the fact that she is less educated than Sandy. (Nirmala once said that she couldn't have managed without Sandy, means Sandy was in the house before her).

Now coming to the kids, Sandy don't love anyone, he is just using them, Sandy needs some one to keep Chauhan business running after NK, so she chose Kunal as he is elder and maybe he was easier to manipulate, and then she made Karan the way he is, for two purpose, firstly Karan's lack of confidence will make sure he can never interfere in business or property and neither can he go against her, and this will make it easier for her as she will just have to keep Kunal under wrap, manipulating one is easier than two.. her second reason is, Karan's condition is the result of the bitterness between NK and Nirmala, If NK started to get close to Nirmala, Sandy will loose all her powers, so she gave NK a reason to blame Nirmala and keep them apart.

The day Sandy said she wish she can tell Nirmala how easy it is to make her a fool, I was sure she was evil. then sandy saw Meghna is not easy to control, so she went after her and tried all possible ways to put her down, and when dadu was supporting her, Sandy was just pissed, and was angry, as she saw power slipping from her hands, till now Naina wasn't any major threat, but in the last few epis, Sandy saw what Naina is capable off and got even more terrified as she is having tough time tackling Meghna as Kunal is by her side and if Karan too falls for Naina, and if Naina cures Karan, Sandy will loose everything as Karan is her main weapon for keeping NK away from Nirmala. and NK is her only hope as Meghna is taking Kunal from her hands.. So Sandy started to attack Naina as well...and wants to keep NaiRan from coming close...

But I was sooo right..🤣, Sandy is the main villain..Hate her so much😡 Hope she gets kicked out...

It seems like dadaji is not too fond of her either so the angle of her being his mooh boli beti. Might be false.

I don't think she is an orphan because nk is all about them riches he won't have a heart so big.

So her stance is rather confusing.