Hello friend,
There is a lot of stuff in the Catholic tradition that I'm ignorant of. These things also happen to be "optional" for Catholics. 99% of Marian devotion is like this.
I do pray to Mary, what is wrong with that? She is a member of the Body of Christ. I pray to you as well. What is wrong with that? Well, nothing, unless you equate "prayer" with "worship." I invite you to look up the etymology of the word "pray." I speak Italian. I know that when you want to say "ask" you use the verb "pregare." And when you want to say "pray," you use the verb "pregare." You know that Italy is where Catholicism grew up, can you expect Catholic terms not to reflect parts of the Latin and Italian languages?
Prayer to anyone other than God is a request for them to pray to God, for me. So whether I ask Mary to pray for me, or I ask you to pray for me, I'm doing the same thing, just "praying to" different people. Have you ever heard the English phrase "praytell"? Churchhill used it a lot, Shakepeare is famous for it. (Among other things

. I means "I pray you to tell me" or "I ask you to tell me."
I guess my point is that I do not worship Mary, and if we were both native Italians, this would not be an issue.
*I have heard troubling things about Alphonse Liguori and the Glories of Mary. And I can honestly not defend the quotes I'm shown. Then again I know nothing about him, and I have not read his book. It is something for me to investigate.
Lastly, even though I think you are wrong, I respect you for doing your part, and according to how you know best, to spread what you believe to be true. That is a sign of charity and I am grateful.
In Christ,
Bill