[jo kus]

Except that the doctrine of the I.C. also states that she was filled with every grace -- to such supercapacity that she was, from that moment, able to give away her extra grace to others.

This is not a doctrine of the Immaculate Conception, but rather the doctrine of the Communion of Saints and the Mystical Body of Christ and how they interrelate. The saints have the same ability as Mary in this regard.

Regards

[Agrarian]

It's in the papal bull.