Naagrani Maa and Vikrant Mother

Being Naagrani Maa and Queen of seshnag Vamsh Doesn't she know who could be Vikrant ki Maa ...Also Vikrant Mother is still a Naagin who had not lost her powers if at all she could lift the nagamani earlier what did she used it for and why did she want bela to lift it again???Does Bela Touching the nagamani only revive it's powers???If bela Lose her powers and assume let anyone who touch the nagamani will she become the naagrani of seshnag vamsh like in season 2 where sesha become the naagrani of takshak vamsh just by beheading the earlier naagrani of takshak rani...