Castiel's Mother ~A Supernatural motherhood fan-fiction~

Iris, a Greek mythology woman, meets Dean Winchester in a roadhouse.
Herself and the Winchesters hit the road to Kansas City and find out that in the city Castiel and the Winchesters are in danger in the hands of the lost son Hades, Haten, a dead shadow who wants what his people deserves, human bodies.
In the fight against Haten, Iris is the key of this fight. If she brings the Winchesters' bodies to Haten, she will have his son by her side for ever, but if she disobeys the prince of hell, he will take away his son to death, Castiel.
Iris got to choice between the love of his son or his son's life with the Winchesters.
What will make her feel happier? His son dead? or his son's life destroy?.