The Ungoledain are defeated and have fled, but you are not quite out of the woods just yet.
'${RACE}, we have successfully driven the Ungoledain from Thornholt. That is as good a reason to celebrate as any, however I cannot bring myself to so much as look at those honey cakes, while Vaskorn is ill. I feel quite ill myself with remorse.
'Could you go check on him, and see if there is any improvement in his condition?'
Threkmóth can be found in Skoghús, in the south of Thornholt.
Vaskorn is not feeling well. You should return to Threkmóth and update him.
Radagast can be found in the north of the Thornholt woods.
With Vaskorn's condition not improving, Radagast should be notified in case there is something he can do for the Beorning.
You should return to Stráhek the Stout in Skarháld and tell him what took place in the woods.