Darkbinder Dilemma

Ah, Delas sent you. I see. It's good she didn't come herself. It would break her heart to see what is happening to our family. A demon is defiling our dead in the ruins nearby. She's using her fel magic on our ancestors, turning them into mindless horrors that do the bidding of the Burning Legion. I can't deal with the harpies and this demon, but maybe you could help? Get rid of the darkbinder that torments our dead, and I will grant you access to whatever's left of the Moonfang family relics.