Here is where you had the breakdown: Mary is Jesus’ mother; therefore, Mary is our Mother.”
It does not follow that since Mary is Jesus mother, that she is the mother of every Christian.
It does not follow that since Mary is Jesus mother, that she is the mother of every Christian.
It does if God is our Father (Matthew 6:9) and Jesus is God's Son (Matthew 3:17) and we are God's children (John 1:12-13) and Jesus is our brother (Hebrews 2:10-13).