Absolutely nothing. Scripture does not record one word of what you are speculating.
Besides, Jesus is the one who redeemed us. He is the one who died for us.
He is the One we answer to at the Judgment Seat of Christ for what we did on this earth.
And if Catholics want to use the criteria of Jesus teachings as the basis for that evaluation, He never mentioned one word about anyone relating to Mary, so there's no reason to think that it would even come up.
Additionally, it's the work of the Holy Spirit in our lives that produces the fruit of righteousness. Mary cannot do the work of preparing us for her Son. She is not God and only HE can work in our hearts. She does not have that ability.
From what I've read, Scripture doesn't record all that Jesus did while he walked the Earth.
Are we to assume He only did the things that were recorded and nothing else? Did His miracles cease with His death?
If Jesus begins His with 'Love the Lord your God with all your heart and with all your soul and with all your mind.' This is the first and greatest commandment' and #5 from the Big 10 is to honor your mother and your father, what of Jesus' mother?
How would He honor her? What would He and the Father convey upon her? Is her part in our story over or does she still have things to do? Does she have anything to do with the two witnesses of Revelation?
For me, I don't have any real trouble thinking she is what is said of her and her task is as I wrote.
It's easy for me to believe in an unlimited, all powerful Triune God, so all I've read about Mary is not a leap of faith for me, but is rather easy to understand as a part of the Grand Plan.
If I'm wrong, I'm still waiting for the experts' answer regarding my fate.
But if I'm right, what of those who get it wrong and work so hard against? How would God, whose ways are not our ways, view this? Are there consequences? Still waiting on that answer as well.
Thanks anyway.