Plot-wise, there is a way to complete the quest with the optimal outcome: Speak to Danyla but refuse to kill her, triggering combat. The quest will be completed but you won't receive any reward. If you tell Athras that you didn't find her, he refers to the lifted curse and also tells you about finding Danyla himself. If you don't talk to Danyla and lift the curse on the werewolves while the quest is in progress, Danyla will disappear. If this is the case, your Journal will state you have completed the quest, saying 'Athras has died, his hopes with him.' If you chose to side with the werewolves and kill the Dalish while this quest is in progress, Athras will also attack the Warden and the werewolves, forcing them to kill him.

Trade the scarf with the Mad Hermit the Warden can still tell Athras about Danyla's fate, completing the quest, and - based on a Coercion check - even obtain the same reward.

Return the scarf to Athras, saying either that she died from the curse or that it's too horrible to speak of what happened, after which he rewards you.

Note: Dragging the conversation on for too long results in Danyla making the decision for the Warden and attacking the partyĭanyla will drop a scarf, which gives the Warden the option to:

Dragon age origins zathrian