The whole family doesn't work in any job, they are uneducated, dadi believes working as bdo is beneath them and their caste, even Tettar uses thumbprint all this time for documents. How they are surviving, by father's taking bribes to give out construction contracts using his mukhiya status and government schemes given to his office no wonder he wants his damaad close to help him with everything, if he can't read and write. Nimki has taken over this office now, so she needs to put them straight.
Nimki and her mukhiya status it will be babbhu rejection at holi and the bdo and alina pointing out he is the villain and not a hero, to make her snap out of Nimki Bahu mode being so much goody goody to those people that hate her at her sasural and become nimki mukhiya.
Also I've noticed the Dadi clues in the show, Nimki conversing with dadi on the veranda at the back and changing the tv channel on dadi to annoy her and pass time. Dadi complaining that everyone is ignoring her and not asking her more then once to take her to Nimki's holi at ghat tola. Seems to me dadi might help nimki also get her rights in the haveli. Anaro doesn't want her to enter the house and dadi played along even going as far as to say she will have shotgun ready to shoot nimki if she crosses the line, but in the room before Anaro left for ghat tola, the convo with dadi, they confirm to each other they have never liked each other so I think dadi is now going to join Tettar and Nimki's side against Anaro.