And we can always think of her request at the Wedding of Cana as saving the newly married couple great embarrassment.
Her work continued as she attended to him at the cross (John 19:25). As the first Christian, she kept cooperating with grace by being present at the founding of the Church at Pentecost (Acts 1:14). She persists in this role as our Mother in heaven today (Rev. 12:17).
Wine at Jewish weddings in Christ's era signified several things at once, with more than mere traces of those meanings existing unto this day.
The toasts made by the guests; L' Chaim, "to life".
http://www.chabad.org/library/article_cdo/aid/2987145/jewish/Why-Do-Jews-Toast-LChaimTo-Life.htm
with weddings among the prosperous, in 'good times' extended for many days, the guests accepting the newlywed couple into their respective families and community.
The wine signified too, sanctification. The wedding itself also reflecting union (rather than abandonment) of God with mankind, God with Israel, the promise of things yet to be, all of that as part of the uniting of what God had created in His own image; man, and woman, the children (nation) of Israel. L'Chaim, to life, to their life, to our (the guest's) lives, all of us together, under God.
http://www.reformjudaism.org/jewish-rituals-wedding-day
When Mary remarked as observation; "they have no wine", as I understand it, Christ's response was much towards those aspects of Jewish religious traditions, and His own self as Groom of those whom God would call to be Bride of Christ.
It was towards those things, and His promises to Israel --- I believe was reason that the Spirit moved within Himself -- and Mary (I assume) noticed, and was perhaps led of the Spirit to say what she is attributed in NT Scripture to saying to the servants immediately after. I'm under the impression that she was likely as not taken by surprise by Jesus's response, yet it does seem that she knew something significant "was up" (as could be said in American vernacular) when Jesus responded. I rather doubt she was intending to coax performance of a miracle out of her first-born son, yet had sensed there was move of the Spirit (for lack of a better term).
Does any of this make sense, to you? Can you see what I'm saying here? The miracle at Cana was about God's own relationship to descendants of Abraham, descendants of those who He had delivered out of bondage to return to the Promised Land.
His words in John 6, at verse that came to be numbered 63; (NKJV);
Can you see the beauty? His words, His life and ministry, His sacrifice -- His later resurrection from death sealing forever the words given to Abram and to Moses --the Promise, and the Law -- all of that revealing His nature, Jesus on the cross saying "It is Finished" having utterly commended his soul unto his true father, the Creator of the Heavens, and the earth. It is a terrible beauty, a frightening realization of just how deadly sin really is, and that He (God Himself even, in the person of His only Begotten Son) paid the ultimate price, His life willingly laid down, ransom for many.
Sin "kills" God? It surely did once. That is part of the lesson, part of the Gospel. Do not be my enemy -- stop being my enemy -- He says to us. It hurts Him too, when we are. In ending, and in yet still continuing results (down through generations even) --- sin is destructive and hurts everyone, most of all, ourselves, both individually, and collectively.
Choose life (Himself), and live, in effect He said to them (and to ourselves in this day and age too?) while they were yet in the Wilderness. Deuteronomy 30:15-20
https://utmost.org/it-is-finished/ from Oswald Chambers
and from "gotquestions.org"