Wasn't it also because her older sister was a puppet being used to exploit their people and Caroline tried to overthrow her in order to help her people but it backfired spectacularly and is now why she and her army is on the run?
Now that you said it I am thinking it as well on what the Fat guy did. Sure, he was part of their little club, but we never saw him really do anything to him, so if it was not physical, then I'm almost certain he "used" her son.
Should have given them something else besides the tricky award. They definitely deserve more than a pity award for something that has never been seen in the Netherworld. The rank thing I can sort a understand since what they are only second years so if an exam to reach higher ranks makes sense
Yea like the other guy said, she likes to play around, but I'm certain she probably gets something out of all this or else she would not be smiling so monstrously.