Let's be real, she would've received a STERN warning by now. Even if librarians are government workers, that amount of incompetence wouldn't fly without some kind of disciplinary action.
No matter how many times they patiently teach her, she's just fucking immature, inconsiderate and self-centered. There's only so many times you can show patience and restraint until it's clear she's not really willing to learn.
I really want to like her, but she's just so... despicable. I can only hope she gets retribution soon.