Ok, so my question is this: what kind of adventure do you want these two to go on? I've got a few ideas:

-The duo can go on the run and hide out in a small village. Remnants of the rakya discover Vol and Ariana and try to kidnap the princess. Mayhem and carnage ensue, ending up in Ariana's capture. Vol goes to rescue her, she sees he cares for her, etc. 

-They can pursue a cure for her deafness from a mage located on the edge of civilization, said mage desiring to enlist the two of them in a quest to stop a band of rogue mages from taking over the realm. 

What do you think?