Coz if she does things will fall in place and there will be no sympathy drama for ichha thats been going on since episode 1 of this show... If u see there is nuthing wrong with ichha's life since she moved in this haveli.. ofcourse other than the loss of her father.. so the writers have to create moments and storylines to show that she is suffering and in a pitiable condition.. everyone is forgetting that tappu and naani are the 2 people who are unaware of Jogi's past and why damini is given an upper status to other servants in the house. Jogi just made Naani shut up and bullied Tappu into accepting Damini and ichha by sending her to hostel.. there was no explanation given to them.. suddenly one fine day ichaa is eating with them and going to school with tappu, moving in the guest room.. Did Jogi ever treat Ichha as his daughter before he came to know abt her father? Did he ever bother to hug her or even ask why she doesnt go to school or anything? Naani hates Ichha more probably coz as a grandmother she remembers Tappu feeling left out and going away to hostel.
In any case its definitely wrong of Naani to treat Ichha so badly.. she wants damini and ichaa to leave thats why she behaves that way.. well she should understand that its not her house and she shud move back to saharanpur if she wants her wish and will. Ichha can just speak up, damini can move out if her daughter is not happy.. life is not very difficult for the 2 ladies.. like the writers want the viewers to believe.