Umm, the Shaman concept is good too. Perhaps, if we did try for the Lang Demon thing, then we can possibly give reason for the demon to continue to follow our group, have them lure them to this shaman who is strong enough to extinguish both the Lang and the Demon. So, we can still play with that idea still, and that gives a solid ending to the Lang Demon.
I think it also takes Mona and Arz out of the equation for a while as well. They won't have to worry about dealing with the Lang anymore, and they'll love to hang around until this demon causes the goblins to run and hide, cause then Arz can snatch up a few snacks. But, when they see the Lang Demon eliminated, they'll get the hell out of there to avoid any trouble. Mona will feel no need to get Suri since they're out from under Silver's thumb. But, when they do run into him, she'll finagle they way out of things, saying they were following them and had lost them somewhere. IDK...
K, other than that, I guess we can wake up Mona and Arz for a while, get them moving a bit to set them up for the next big move. Then, we'll have our group come to the ironwood yard, stay there for a few weeks or months so they can work to make a bit of money for their travels, purchase what they need, and then plan to leave. Possibly, Craz's situation pushes them more and more to leave sooner so they can find someone who can help him. Maybe, a healer in Birkvil tells them of the Shaman and the difficulty in finding him.
Landa will end up taking management of Craz's care since she's an Elf who's strong enough to deal with it somewhat, and will end up going with them when they leave to search for the Shaman.