From the earliest years, Mary was called “the second Eve.” She being , as Tennyson put it, “our tainted nature’s solitary boast.” Understand that the doctrine of original sin is a development of what Paul says on the issue, and as now understood based on the opinion of St. Augustine.The objection to her exemption was that if she were without original sin that she would not need salvation on the cross. My view is that salvation is to be admitted to the presence of God and to see him face to face. Certainly she was sanctified by the Holy Spirit. The doctrine of the Immaculate conception simply says that she was chosen to be the mother of the Messiah and thereby became a pure vessel.
Earliest years? I think the earliest would be long time after her death, certainly was not penned by Heavenly direction. The only flesh being that has passed through this flesh age perfect and without sin is Christ, in the flesh called Emanuel... God with us.
Now I do not know but is the general acceptance that Eve went to or is going to .ell? Because see I do not believe that decision has been made. As Eve certainly did not commit the unforgivable sin, as that sin can only be committed at an appointed time and that time has not yet arrived.
I think there are going to be a great number of very disappointed people when all mysteries are revealed... Eve could well have repented and accepted Christ when He was in the tomb ministering to all those back to this time.