How did Petra handle losing her eye? The sorta recovery from things like that seem like a fun place for characterization
oooooo thank you this is a really good character question yes yes yes! i have thoughts. yes.
so emotionally speaking: when it happened, she was already dealing with some extremely traumatic life-changing shit (which is BIG spoilers so i can't get into detail on it), so it was like... grief on top of grief. she really hasn't entirely processed everything that happened yet, and the eye-stabbing event comes up in nightmares/flashbacks sometimes. she's also a little self-conscious about it from time to time (when you are visibly disabled somehow the general public unfortunately cannot be normal about it) but usually her otherwise very high confidence in her appearance overrides it. her antidote to anxiety (besides cigarettes/booze, insert sad D.A.R.E. lion here) is really just trying to crunch whatever's freaking her out underneath her ego. that's also why she kept the knife that took her eye out. to assert dominance. LOL
physically speaking: i have tried to Do The Research (talked to a couple of people with single-eye blindness, read some "so what is that like anyway" reddit threads, etc.) and whenever i'm writing action scenes especially, i am trying to always be thinking about how it affects her. she's not far out from the injury (like a year) so she's still a little green at navigating the world with one eye. still bumping into stuff, not a big fan of stairs, sometimes forgets to check the blind spot and misses an entire door or something. she also gets neck aches from having to crane her neck around more than most people do to see stuff, especially when driving. please do not toss anything at her and expect her to catch it. she will yell "ONE EYE" and probably throw it back at you (and... usually miss).
one thing i'm putting into chapter 2 is some brief scenes showing that she's actively training/sparring with Sykes to get a little better at working around her more limited vision, since it's a bit of a liability re: combat. it doesn't significantly affect her spellcasting (you aim with your intention, handwave handwave handwave teehee) or her marksmanship (research indicates that for the most part, you can get along fine shooting guns with one eye). but she does want to avoid getting Bonked. or god forbid stabbed again lmao