I might be kind to a random woman in town, because we should love our neighbor as ourselves.
But God forbid that we worship her!
I should love my mom in a significantly greater way, because we are to honor our mother and father.
But God forbid that we worship her!
We should love the Virgin Mary more than any other woman, because she is Jesus' mother -- i.e., the Mother of God -- and because Jesus gave her to us at the Cross to be our mother, too.
But God forbid that we worship her!
Catholics are big on both reverencing Mary and having no other gods before the true God.