“But does this stop Roman Catholicism from their error??”
Thanks for the link, but you stopped reading too soon. Immediately following is:
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. God puts enmity between her and Satan in the same manner and measure, as there is enmity between Christ and the seed of the serpent. Mary was ever to be in that exalted state of soul which the serpent had destroyed in man, i.e. in sanctifying grace. Only the continual union of Mary with grace explains sufficiently the enmity between her and Satan. The Proto-evangelium, therefore, in the original text contains a direct promise of the Redeemer, and in conjunction therewith the manifestation of the masterpiece of His Redemption, the perfect preservation of His virginal Mother from original sin.
So for Mary to be born sinless her mother would have to be too, and her mother before her? ... sounds like feminism writ twisted and in full.
The first sentence of the paragraph says it very clearly.
No direct or categorical and stringent proof of the dogma can be brought forward from Scripture.
http://www.newadvent.org/cathen/07674d.htm
To "see" Mary in Genesis, or the later verses used to support the "immaculate conception", is to practice eisegesis....the reading back into scripture something that is not there.
But like I said....none of that stops Roman Catholicism from advancing this false dogma.