It sounded like a 'choti muh badi baath'...writers have misplaced the scripts I think.
If this advice was by Kesar, it would have made sense and poignant. Baba just said..'han..han..' and proceeded further. Or she should have stopped just at saying 'please take care of my sister'.
Since the day baba absconded, the charm and magic of this serial also went absconding. Even after his return, nothing exciting happened. Somewhere something is missing...