Good idea here......It's a story about how Applejack got cursed and became the way she was.
Now stay on me with this, so she is a monster now right?
Doesn't that mean she has chaos magic in her body?
My story is gonna be not out of character, it's just gonna be Applejack being betrayed by her friends.
Because, her being hit by the elements DURING this curse that she will have forever mind you, will kill her.
So, she runs away, never to be seen again into the Everfree Forest.