The world is radically free to do whatever is conceivable and physically possible; what else is new? God doesn’t force anyone to do His will, or free will wouldn’t exist at all. So we know that said freedom is God’s will.
To override this “rule” is a supernatural act that means God intervenes in the natural order of things, which He has already deemed to be worthwhile in spite of the evil that He allows and, as the Church teaches, ultimately intends to bring an even greater good out of. So, IOW, God, knowing the beginning from the end, isn’t obliged by the dictates of His justice and love to answer such prayers even as He may, of course.
Having said that, the Church acknowledges that there isn’t any perfectly pat answer to the “mystery of evil”. But our faith nonetheless addresses evil head-on. Consider this: God, Himself, allowed evil to have its way with Him, on the cross, in human flesh, at the hands of His own creation, forgiving the evil He suffered all the while. He offers this as the remedy for evil, for sin, by overcoming it with love, not with power. And then He does demonstrate His power, of life over death by the resurrection, so that we’ll know that His love triumphs over both: sin and death.The cross stands as this offer, that we can navigate to anytime we wish, to join Him in overcoming evil with love as we choose between the two. Our hero is a humiliated and crucified one, unlike the world’s heroes and superstars. From the CCC:
385 God is infinitely good and all his works are good. Yet no one can escape the experience of suffering or the evils in nature which seem to be linked to the limitations proper to creatures: and above all to the question of moral evil. Where does evil come from? “I sought whence evil comes and there was no solution”, said St. Augustine, and his own painful quest would only be resolved by his conversion to the living God. For “the mystery of lawlessness” is clarified only in the light of the “mystery of our religion”. The revelation of divine love in Christ manifested at the same time the extent of evil and the superabundance of grace. We must therefore approach the question of the origin of evil by fixing the eyes of our faith on him who alone is its conqueror.