PNM - 15 Backstory

Hey !! For my first post I want to explain my character's backstory since IG is limited on typing space.
I'm open for any thoughts on my ideas on how I can improve especially my writing. I tend to be wordy so I'm sorry I'm not professional or grammatically correct.
I created this character in 2010 or 2011 when I was deep in the IZ fandom. She went through some...harsh changes then I completely threw her out in 2014. When 2019 came around I needed something to occupy my time, to get my mind into a better place, which explains why I've returned to the IZ fandom somewhat. I rebooted my OC, in which I named Kat but she is also referred as PNM - 15 to another degree, and modified almost EVERYTHING--completely wiping away her cringey backstory. I wanted to go far with this character if I could like creating a comic series of my own with other great others or writers, but who knows. Like I said, let me know in the comments how you feel! Thank you! <3