Third Sister (Killdeer)

The Third Sister, presumably known as Trey, was one of the Seven (later Six) Sisters, the mothers of the Aeluran race. Described as "loving and giving" (though Suncrest suggests "frighteningly smart and star-blessed talented in the physical sciences" would be better), she is credited with the discovery of womanstone.

Creation
Like her sisters, Trey was created of altered human DNA by Eamon Cavanaugh. She was the third such creation of Cavanaugh, born after the Eldest and the Second Sister, and before the Fourth, Fifth, Sixth and Seventh Sisters. The rest of the Aeluran ancestors were created by Cavanaugh without the Seven Sisters' knowledge.