Tarrin died. The only thing different is, Tarrin died MORTAL. Thus his soul was not destroyed. And if we remember, way back Niami collected the soul trap that Tarrin created for himself.
Also, Tarrin gave out many different items that were brought back to Sennadar. We know that one was Dolanna's soultrap, should she die. The others were his sharaem and cat's claws, but you know there had to have been more to that than met the eye.
Ch. 16
She's going to make it home, one way or another then.If I survive the initial encounter, then there wont be any need for Dolanna, and shell come home. If I dontwell, Dolanna will be here until Bragg completes his task.
Also, if nothing else, there are extra Sui'kun in Sennadar. One can come to Pyrosia and finish Tarrin's work and bridge Pyrosia and Sennadar so that it doesn't require a mortal as the lead in the Heart of Pyrosia.
One question though. If the Demon Lord leaves to heal himself, when he comes back will he be forced into his old created body, or will he be able to create a new body, immune to the new rules?
Or will he just withdraw to a far distant part of the planet far away from the new Conduit so that Dolanna can't draw enough power to blow him away.
Ch. 16
He's got a plan even though he died.He had given his children the Cats Claws and his precious shaeramand that was what needed to be done. They would be needed later, but they could not help him in what was coming.