This quest is not available in game.
Return to Thyn'tel Bladeweaver in Darnassus.
We shall rein in the worgen problem, have no worry of that. This evil that your friend introduced to our woods will be contained, and I bear her no ill will for her actions. Strange events are afoot in these times, <name>, and the darkness knows no respite.
I will keep you no longer. I suspect that there are others that should hear of what you have found in the mines of Duskwood.