Mothers ring doesn't mean it belongs to the Ghost
she could have been the Mortal entrusted with your care, as a priestess/prophet, or of course she could pull double duty as the surrogate.
So back the my question it hasn't been confirmed then? (by Tinkerer)
My theory is it's not a ghost but an astral projection of Qetesh. The Mother's Ring is made from the same metal as the headdress Ziva wears to commune with Qetesh.
Heres the other reasons I beleive this:
-The "Ghost" has a similar body shape to the Qetesh statue.
-In the MEGA file she is called "The Apparition" not the ghost.
-The child apparitions that appear during the scene where Ziva is pissed off look similiar to the "Ghost" & she is bathed in a beam of moonlight, just like the statue every time she responds to events.
-The way the father describes her is also very ethereal. How he couldnt resist her, she was the most beautiful creature, she glided towards him. All sounds very otherworldly.
-Also MC is 20 years old. The Goblin War happened 20 years ago all because Nergal cought Qetesh sleeping with a mortal. Sp it also adds up time wise.