That is why sisters shouldn't be married in same house. Bondita as a child bride and wife made RC haveli happy and prosperous. She was given the title of Grihlaxmi the woman who is lucky charm. In her presence the house people were happy and we're growing. The entry of Sampoorna with a greedy intention I will tagged her Alaxmi for RC haveli.
The point is for getting something you have to earned it. Bon won heart of her in laws family and was accepted by the family and community. But Sampoorn didn't. They say action speaks louder than words. A malkin doesn't mean to dictate anyone or show off. But act as a mature person and taking responsibility. Bon in her rule made sure everyone is getting respect from housekeepers to driver. She would called them kaka , kaki or didi. A respect towards elders no matter if she is malkin or anyone. She was rooted to her moral values.
The RC especially kaka in one of the episode said to sampoorn that housekeepers may call you malkin but deep down they are still devoted to bon bahu.
Sampoorna is selfish greeedy would never earn the crown even if she claims. But bon will. She made her family proud by becoming first barrister. Most importantly Family used to work according to her wishes and stuff.