Jesus also died on the cross to save atheists, Buddhists, Confusionists, devil worshippers, Moslems, Jews, Protestants, and yes, even Catholics. Jesus died on the cross to save every member of the human race.
This should be kept in mind when we see people of other religions visiting Catholic Churches to pray and to worship.
And when people of other religions visit a Marian shrine, we should keep in mind the beautiful prayer that we learned in childhood:
“Remember O Most Gracious Virgin Mary, that never was it known that anyone who fled to thine protection, implored thine help, or who sought thine intercession, was left unaided…”
When people, whatever their religion, pray to the Blessed Virgin Mary, she will help them. She will lead them to Christ. Mary is the spiritual mother and the queen of the whole human race.