The Grey Abbess claims to be the Third Sleeper's sister, is a pacifist, and desires to have as little to do with the world outside of dream as possible. She seems especially wary of the Black Flame.

When in her Abbey, she has demonstrated the ability to trap people who enter in dreams indistinguishable from reality. (The Abbey of Broken Dreams, 27/06/09)

The Abbess drew members of the Northern Defence League into her Abbey and bargained with them for immunity from their crusade against the Sleepers and knowledge of how to brew anti-Black Flame potions. (The Abbey of Broken Dreams, 27/06/09)