I just stumbled across the NPC and since I was on my way to lavastorm decided to kill some bats. Had to kill about 34 for the drops, just logged out when all the bats in area were killed.
I turned them in, got the experience message for the first hand in,and a raise in faction for Indigo brotherhood. Then the message was "Your faction with Dreadguard Outer and Inner, Priests of Innoruk, and Neriak Ogre, can not be raised any further."
Not that it matters much any more.