"You need to read the passages in the Bible that speak of ALL humanity being totally depraved and in need of the perfect Savior.
No one is perfect...not one...not ever. Only Christ."
So where does the Church teach that Mary didn't need to be saved? Can't a person be saved from something before it even happens? Example: Say there is a big pit with a lion in the bottom of it. If I stop you from falling into the pit, haven't I saved you, although you had not fallen into it yet? That is the same concept with the Immaculate Conception.
Regards
But not a word. Be careful of extra-Biblical doctrines. You should take your doctrines from the Bible, not dream them up on your own.