One of the biggest tragedies in the Dragon Prince is that Aaravos was once a good man.
Ok ok ok SO!
I think everyone has realized that Leola was autistic. It was heavily implied both through the flashback images and Aaravos' narration-
She lined up her toys, flapped her hands (it was also shown in the trial scene), seemed to be sensitive towards loud sounds (like the other startouch elves when they talked), and walked on her tiptoes. All of those are classic signs of autism.
But there's one thing I haven't seen anyone else bring up, and that's that her giving her human friends magic and breaking the "cosmic order" or whatever could also be because of her neurotype!
Autistic people tend to have very strict senses of morality and fairness, and will disregard rules if they don't fit their idea of right or wrong. Personal example here, I used to constantly do things I was told not to because I thought the rules in question were bogus.
It's not hard to guess that Leola would find the rules about humans not having magic to be unfair- after all, her and all the other elves, and even the animals around them are full of it! So in the mind of an autistic child, this would be incredibly unfair. And she had the power to "fix" the situation! So why wouldn't she?
Why wouldn't she try to help her friends? Because it would break the cosmic order? That's vague as hell and she was a KID!
And the startouch elves atomized her, for breaking a rule she probably only half understood and thought was stupid. Because she was autistic.
Had this thought and wanted to share, makes the whole thing even more tragic.
Headcanon: Nahida does grabby-hands and silently asks for uppies during meetings or just when talking with the other important people of the akademiya.
All I can imagine is Al-Haitham or Cyno during a very important meeting pausing their sentence to pick up the dendro archon - the god of wisdom herself- and holding her on their hip before continuing their point