We Catholics don’t worship Mary, we venerate her.
One of the many misconceptions about our faith is that we worship saints, which is not true- we worship God alone. We ask the Saints, including Mary, to pray for us to the Lord our God.
Just like we may ask loved ones to say a prayer, we ask the saints to intercede for us to God.
We ask the Saints, including Mary, to pray for us to the Lord our God.