These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Crazy Awesome: Angelica Petrocchi. She would not be nearly as effective if she wasn't tone-deaf. She may not be actually nuts, but as Renata put it, she's a "back-to-front genius."
In Charmed Life, Gwendolen crosses it when she shows up to help a criminal society kill her little brother to open the way to other worlds.
In The Pinhoe Egg, Marianne's father and uncles cross it when it's revealed that, rather than kill their father under their mother's orders when he starts getting too uppity, they merely crippled his legs and imprisoned him in a pocket dimension in the woods behind his house for eight years. They felt it was kinder.