Scotus’ solution includes her in all sinning in Adam.
The English “all” is a very strong “all”-—a sort of philosophical all is the first sense.
In many other languages the equivalent of “all” is more of a statistical “all” as the first sense.
In some, the first sense may be as weak as “many.”
Adam, Eve, Christ, and Mary have different relations to Adam’s sin than all other people having a human nature.
(Human being is a tricky term to use when one is discussing any topic where Christ is a major concern).
The term "all" as used in Romans applies to everyone except Christ.
Both Old and New affirm people sin and have sinned.
To exempt Mary from any stain of sin and to imply she never, ever, ever sinned contradicts Scripture which is something Rome says it won't do.....except it did with the Immaculate Conception.
While Clinton says that 'is' may be a bit iffy.