Grace is not in effect unless there is sin.
If Mary was full of grace, it was because she was a sinner.
People don’t go to hell because they have mortal sin. They go to hell because they have rejected God’s offer of eternal life through Jesus Christ.
When we accept Him, then God FORGIVES us ALL our sins and transfers us into the kingdom of Jesus Christ. We are saved at that point. IOW, NOT going to hell.
No born again/born from above believer is going to hell. Ain’t happening.
Your comment; “Grace is not in effect unless there is sin.
If Mary was full of grace, it was because she was a sinner.”
Your personal opinion. Not theologically correct.
https://www.catholic.com/encyclopedia/grace
Grace (gratia, [Gr.] charis), in general, is a supernatural gift of God to intellectual creatures (men, angels) for their eternal salvation, whether the latter be furthered and attained through salutary acts or a state of holiness. Eternal salvation itself consists in heavenly bliss resulting from the intuitive knowledge of the Triune God, who to the one not endowed with grace “inhabiteth light inaccessible” (I Tim., vi, 16).
In the process of justification we must distinguish two periods: first, the preparatory acts or dispositions (faith, fear, hope, etc.); then the last, decisive moment of the transformation of the sinner from the state of sin to that of justification or sanctifying grace, which may be called the active justification (actus justificationis); with this the real process comes to an end, and the state of habitual holiness and sonship of God begins. Touching both of these periods there has existed, and still exists, in part, a great conflict of opinion between Catholicism and Protestantism. This conflict may be reduced to four differences of teaching. By a justifying faith the Church understands qualitatively the theoretical faith in the truths of Revelation, and demands over and above this faith other acts of preparation for justification. Protestantism, on the other hand, reduces the process of justification to merely a fiduciary faith; and maintains that this faith, exclusive even of good works, is all-sufficient for justification, laying great stress upon the scriptural statement sola fides justificat. The Church teaches that justification consists of an actual obliteration of sin and an interior sanctification. Protestantism, on the other hand, makes of the forgiveness of sin merely a concealment of it, so to speak; and of the sanctification a forensic declaration of justification, or an external imputation of the justice of Christ. In the presentation of the process of justification, we will everywhere note this fourfold confessional conflict.