Given she appears as Shivermaw, this is probably not an actual ghost but rather a projection/echo... her title is Memory, after all, and the quest calls these NPCs reflections and memories. --Mordecay (talk) 18:57, 9 September 2017 (UTC)
The character does seem to be undead though. PeterWind (talk) 19:03, 9 September 2017 (UTC)
