Why are Narpat and Ambika listening to Kaveri's rude comments? Before when Kaveri had the house in her name, it made sense. But the house is in their name now and they have full right to kick her out, they don't have to listen to her. In the beginning of the show when Saloni used to be ill-treated in her house Ambika used to be so annoying and mean. So now what happened to her? Where has all that meanness gone? Now the only smart person in the house is Manno Bhabi, I just love the way she speaks to Kaveri.
The reason they do not kick her out. because they do not want to add to samar's misery. At htis point samar relies on kaveri. She pretends to be helping him. Besides they do not have any income. kaveri may be paying for house expenses.