Eve relates to the sin of Adam differently than everyone else.
in post 451, Ealgeone rightly notes that Christ is excluded—even though he is not specifically mentioned as excluded.
Duns Scotus solution was that original sin would have naturally extended to Our Lady as well had not the grace of Christ sanctified her at the instant of Her conception, thus saving her in a particularly powerful way, and making Him her savior in a more fundamental way than anyone else.
So yes, the sin of Adam extends death to or towards Our Lady, but at the moment it would have impacted her, she was saved by Our Lord.
I’m sure it may be explained better and more precisely, but that is at least the general ball park of Duns Scotus solution.
2 Corinthians 5:21 clearly excludes Christ. As does Hebrews 7:26.
I wonder just how much thin air it took to create THIS claim?