Too many catholic writings say so for you to try and deny it.
You are correct, there are too many Catholics who get carried away on praying to Mary, including clergy and religious. But when you are talking about more than a billion people, there are bound to be a few million who go beyond Catholic teaching.
CCC par. 2675, "Beginning with Mary's unique cooperation with the working of the Holy Spirit, the Churches developed their prayer to the holy Mother of God, centering it on the person of Christ manifested in His mysteries . . .
CCC 2679 Mary is the perfect Orans (pray-er), a figure of the Church. When we pray to her, we are adhering with her to the plan of the Father, who sends His Son to save all men. Like the beloved disciple we welcome Jesus' mother into our homes, for she has become the mother of all the living. We can pray with and to her. The prayer of the Church is sustained by the prayer of Mary and united with it in hope.
Why not?
Headquarters goes 'beyond' what they decided should have been in the BOOK they assembled; so long ago.