I'm getting the feeling the way she got her eyes wasn't terribly fun and her being so cheerful is the standard "I gotta put up a brave front" we see often.
The eyes are prosthetic replacements, the little girl at the end has a prosthetic leg, and surely other people have replacement parts. This world seems dangerous.
They should fire her. Or if not, then they should not give her punishments that force her to not be given training, because that only begets more mistakes. Seriously, pick one (either dont make her one of you, or make her one of you), not both.