Not part of the kahani writen by Preet mean out of the Kahani...i am sure Preet will kill them!!
And yes i donno why but for ViDha i have a feeling that both PreeMan wont harm any of them...even Preet...
She need to kills two lovers...so she ll kill mahi nthe baker...and then bye bye Vivan...and i donno but i think she ll keep Dhara...then when they ll be 18 again another story...