i think charlie probably honestly truly believes that she is definitely not something someone would want with her scars.
i dont think it would be enough for her if the person just simply looked away. she would want to feel like it is alright to even have them. that it wasn’t just a symbol of how weak she was after she got shot and how she managed to let someone she got close to die.
the fact that they will always be a part of her will probably bug her forever until she gets confirmation. that it was okay. and that she is okay. her scars only show a bit of how broken she is inside but its visible and it’s painful.