But one day cvs will have to redeem her as the show's name is SWARAGINI. So just my personal point of view, that the only way to redeem her and justify her acts is to show that she was under the witch's spell.
Maybe they could show a flashback where after failing to kill Swara the dayan Mohini did some black magic on Ragini; in this way they will somehow 'justify' her crimes even though when she drugged swara with sanskar she did it purposely and not under any spell.
So at the end everyone will forgive her easily and accept her.
Just my pov, what do you think?