Is There a Difference Between Original Sin and the Stain of Original Sin?

There was never a time when she was not sanctified. And so in a natural way, given that she was conceived as a human being, she was, naturally speaking, subject to original sin but immediately sanctified such that it never affected her. But there's still a kind of complete contingency of Mary upon the antecedent, redemptive grace of Christ. So some of those worries about Christ's headship even over Mary become a little bit more clear and sussed out.