Baba is right in a way Rv house does not acknowledge lovers. Or to say BB wants to control everyone hence she will not let any one who she cant control in the house. she love Abhir but cannot control him hence keeps him away. But a point which both nanu and Baba has understood is that to ground abhir they need Mishti. Because only she can get to him and ground him. But in her BB selfishness she fails to realize that her son cannot be kept home if she does not have Mishti with her.