23For all have sinned, and come short of the glory of God;
Again in Romans 5:12 Wherefore, as by one man sin entered into the world, and death by sin; and so death passed upon all men, for that all have sinned:
More importantly Mary herself in Luke 1: 46 And Mary said, My soul doth magnify the Lord, 47And my spirit hath rejoiced in God my Saviour.
Savior from what? There is only one thing she could be saved from-SIN.
There is none that understandeth, there is none that seeketh after God. 12 All have turned out of the way; they are become unprofitable together: there is none that doth good, there is not so much as one. 13 Their throat is an open sepulchre; with their tongues they have dealt deceitfully. The venom of asps is under their lips. 14 Whose mouth is full of cursing and bitterness: 15 Their feet swift to shed blood: 16 Destruction and misery in their ways: 17 And the way of peace they have not known: 18 There is no fear of God before their eyes.
This is by the way, a citation from Psalm 13; Psalm 14 goes on to describe men who walk "without blemish, and work justice".
St. Paul's "all" is a literary device of generalization, like "all Mexicans have dark hair". Surely some people existed both in Judea and in Rome who were not bloodthristy murderers. It is not a prooftext for Mary's sinning.
Romans 5 does not even describe actual sin; moreover, "all" in verse 12 becomes "many" in verse 15. In other words, there, too, we deal with a generalization with implied exceptions.
Nobody denies that Jesus is Mary's Savior. It is He Who made her without sin.