Gypsy luck, or Satanic protection.
Now if the person in fact later repents, such events may also reflect divine mercy in the lead-up to what has now become a saint.
But anyhow in cases like this, God can also arrange to let the devil bring calamity. The devil might view this as “welcoming the person home” (even though he ends up in hell, it will be with this person there too as yet another slave).
> Gypsy luck, or Satanic protection
I look at them as the same. I am of the same opinion as you are about the Lord letting the devil bring calamity.