“Let’s try some easy math:”
Do you really imagine that God is constrained by easy math?
There is no time in Heaven. The Blessed Virgin Mary has all eternity to answer any prayer, and no difference is discernible in the Earthly realm.
“Given that there are 86,400 seconds per day...”
How many seconds are there in eternity?
Your elevated human woman is as dead as the rest of her generation; waiting for the Last Trump; just as countless others are who have died in Christ.