Did Mary crush the head of serpent?

In this video Matt Slick exposes another false teaching of the Roman Catholic church. In Pope Pius IX's Ineffabilis Deus (Defining the Immaculate Conception), he declared that Mary crushed the head of the serpent. This is NOT scriptural!
See Genesis 3:14-15 NASB95. Simply reading the text with the proper pronouns, you can clearly see that only Jesus crushed the head of Satan. Mary is not addressed in any way outside of being a woman later included in the curse.
Mary was a blessed woman to have been chosen by God to carry Jesus. Anything more being attributed to her is false. All your faith, hope and love should be aimed at God alone.