Well, Benedict XVI had this to say just last year:
“Mary is the mother and model of the Church, who receives the divine Word in faith and offers herself to God as the “good soil” in which he can continue to accomplish his mystery of salvation. The Church also participates in the mystery of divine motherhood, through preaching, which sows the seed of the Gospel throughout the world, and through the sacraments, which communicate grace and divine life to men. The Church exercises her motherhood especially in the sacrament of Baptism, when she generates God’s children from water and the Holy Spirit, who cries out in each of them: “Abba, Father!” (Gal 4:6). Like Mary, the Church is the mediator of God’s blessing for the world: she receives it in receiving Jesus and she transmits it in bearing Jesus. He is the mercy and the peace that the world, of itself, cannot give, and which it needs always, at least as much as bread.”
vatican.va/holy_father/benedict_xvi/homilies/2012/documents/hf_ben-xvi_hom_20120101_world-day-peace_en.html
Mary is not just a saint, she is “Mother of God” (a belief made dogmatic by the Council of Ephesus in 431) a person of unique and special stature who is a central figure in our faith. I can see how you might construe statements like:
“The Church exercises her motherhood especially in the sacrament of Baptism, when she generates God’s children from water and the Holy Spirit, who cries out in each of them: “Abba, Father!” (Gal 4:6).”
As ‘worship’, but when it comes to “faith and morals” the pope is the ultimate authority!
My suggestion would be to heed the advice in the Catechism:
"To avoid rash judgment, everyone should be careful to interpret insofar as possible his neighbor’s thoughts, words, and deeds in a favorable way:
‘Every good Christian ought to be more ready to give a favorable interpretation to another’s statement than to condemn it. But if he cannot do so, let him ask how the other understands it. and if the latter understands it badly, let the former correct him with love. If that does not suffice, let the Christian try all suitable ways to bring the other to a correct interpretation so that he may be saved.’" - CCC 2478, quoting St. Ignatius of Loyola
Instead of worrying that the veneration of others has gone ‘too far’ and crossed into illicit ‘worship’, think of it as different Church figures resonating with different Catholics. That is, perhaps some Catholics find it easier to reach out to God via the Mother. If you are certain you must intercede and correct, consider St. Ignaitius’ sage advice above (which is the same advice given in the Gospel of Matthew).