Gzifa is the final turn-in NPC in the Emanating Crematory.
In order to spawn her, Mabiki, Yogundi, Talakoi, and Ngozi must be killed. Each of their deaths spawn A Ghostly Essence. Upon the Essences' arrival to the crystal room, Gzifa spawns.
This is the most pointless and unfair task. Any task that *requires* one particular class to succeed is crap imo. How on earth do you do this if you don't have a rogue??