"O Virgin most holy, none abound in the knowledge of God except THROUGH THEE; NONE, O Mother of God, OBTAINS SALVATION EXCEPT THROUGH THEE, none receives a gift from the throne of mercy except THROUGH THEE." - Pope Leo XIII, Adiutricem Populi.
"God has committed to her (Mary) the treasury of ALL good things, in order that everyone may KNOW that THROUGH HER are OBTAINED every hope, every GRACE, and ALL SALVATION. For this is his will, that WE OBTAIN EVERYTHING THROUGH MARY." - Pope Pius IX, Ubi Primum.
IF she is the dispenser of ALL SALVATION, and through her and her alone can salvation be attained, then she is necessarily worthy of worship. No matter how your church tries to spin it, she is worshipped if she is the source of your salvation.
Did Mary bear in her womb, the Word Incarnate, Jesus who is the salvation of all? Except through her, the Word Incarnate is not born and there is no acceptable sacrifice for the forgiveness of sins.
It seems as though God did indeed entrust everything to her when He overshadowed her and conceived His Son within her.
Try actually reading the words you post objectively without that knee jerking thing protestants always do.
Every Marian doctrine begins and ends with Jesus.
She is who she is because her son, Jesus, is who He is.