That statement is talking about Mary’s willingness - her answer “yes” to God - to become the Mother of Jesus.
The petition holds that her willingness (intercession) helped to bring Him into the world.
It does NOT mean that WE have to go through Mary to get to God.
catholicism currently teaches that as none come to the Father but through Christ, none comes to Christ except through Mary. I don’t have that quote with me. Will have to post later.
No...it goes beyond that. It is saying Mary is the one making things happen...she says Joe gets grace or Betty does, etc..willed intercession of Mary.
Please; if nothing else; read the BOOK to see if your QUOTED word - YES - is found in Mary's answer.