Sounds like you were saying since Mary participated in the Incarnation she is now allowed to participate in the salvation of each person. IOW, there was the Incarnation help, and now there is something more.
Was I reading you right?
That "something more" is merely the effects of the Incarnation rippling through time. It's not a questino of her being "allowed" to participate in the Salvation of each person. She already has, by giving the world her Son.
If you are planning on being saved because of Jesus, then Mary had something do to with that. Including giving of her very flesh for God to become Incarnate.
SD
Without Judas or Pilate, there would have been no crucifixion. Does this make them co-redeemers too?