(Quest bug) the old queen and the new king

[Arrowman]

my journal tells me to return to Desthwn, but when I click on him, I don't get any further dialogue options.

 

I started this quest by talking to irensi , the elf standing next to Sul. I proceeded to kill Oernos then I found and spoke to Desthwn. after speaking to Desthwn the quest triggered, but i'm unable to complete it.

I later realised this quest is part of  the council of stars quest. And even after speaking to galawain, speaking to Desthwn still does not end the quest.

[Arrowman]

Problem solved, well kinda. I killed the lioness Sul and her followers. Then when I spoke to Desthwn the option was there. Quest complete. Only the game thinks the bear Oernos is the champion even though I killed him first

[McBeefsteak]

Is there a way to make the two animals fight one another?