If Mama becomes the Archangel, then all life in Shagran will become Babs! (An outrageous statement)
That would essentially make her the Virgin Mary. She was conceived as a virgin, so she is truly the Virgin Mary.
If she was born from the former Archangel, who was born of God, and gave birth to a child, then she is essentially the child of God.
Mama = the Virgin Mary!
Well, nonsense aside,

[Finished reading the main story] There are many things I would like to know more about. | たまご's post