"Can you imagine a parent (God) being approached by another person questioning the motives of their adult child for loving them and then allow this person to kill their grandchildren, their employees, and finally infecting them with a horrible, painful illness?"
Ding stated that God allows these things to build character in the victim, not to prove his children love him best.
I don't see how Job's character was any better after the calamities he experienced. The only result I saw was that Job got new children, employees, and animals.
No loving parent, heck, not even an extremely abusive one, would allow all the things God allowed to one of his favored children. God is as evil as Satan in that parable. In a court of law, he would be considered an accessory to murder and get the needle.