Read the text you quoted. Note that it doesn’t say that “only Mary” can bring you to Jesus. It says that Mary “can only” bring you to Jesus.
Where in the Bible does it say that ONLY the Bible is a source of religious truth?
I see your point.
Do you look to the scribbling of Sinful man for the truth.
shalom b'SHEM Yah'shua HaMashiach
An interesting question even if a bit misleading. The Canon contains a list of authoritative scriptures. These Scriptures did not become authoritative by being in the canon. Now what better source do we have of Truth other than the Bible? That is a better question. In the Bible we find God's Law, His Words, His Holiness and His Plan for us. What better source indeed. Every other source is window dressing.