Thank you FourtySeven.
Taking from the quote from the 1917 Catechism which ealgeone apparently referred to, I would accept what follows as quoted here:
http://www.newadvent.org/cathen/07674d.htm
The translation “she” of the Vulgate is interpretative; it originated after the fourth century, and cannot be defended critically. The conqueror from the seed of the woman, who should crush the serpent’s head, is Christ; the woman at enmity with the serpent is Mary.
As FourtySeven mentioned, this assessment even though not gathered from Scripture alone is not on the other hand in conflict with Holy Scriptures.
Now the many things that Jesus spoke to the disciples for many days after He rose again from the dead (See Acts of the Apostles), should they not have attempted to pass them along to the faithful and in defense of the faith? (Obviously they would hand them on down at least orally to their neighbors and children.)
One lesson to be learned here is that one of the most crippling tactical mistakes that Protestants are in bondage to is that of sealing up all truth as only available in the Scriptures (at least those which Luther didn’t expunge and modify to his liking). That is poor scholarship and a type of insecurity complex if not mental laziness. This leads to illogical conclusions that cannot ultimately be defended.
If, for example, all truth and doctrine can be found only in the Holy Scriptures, where can I find the doctrine that says so in the Holy Scriptures?
For starters I offer: 16All Scripture is inspired by God and profitable for teaching, for reproof, for correction, for training in righteousness; 17so that the man of God may be adequate, equipped for every good work. 2 Tim 3:16-17