What if Rin had prosthetic arms?

[Sea]

I don't think she'd want to use them to be honest. I can see her asking why she would want them, as she exists just fine how she is. Not only that, but her entire life has been spent trying to express to people who she is and has failed except for art, and hers is unique in that she doesn't need arms to do it.
Maybe someone else with her condition may jump at the chance, but not Rin. You see this as a solution to her problem, but her lack of arms is not it.

I think nailed Rin's character pretty well right here. If I recall, I think Hisao once asked her if she wished she wasn't disabled, and she said something along these lines.

Thank you sir, that was what I was remembering, love the avatar btw.