Her entire characterization was that she had some unspecified "disability", and they gave her a name that is an ableist slur, and made fun of her, and that was IT.

She was a caricature. To be laughed at. Because it's funny to laugh at disabled people, and disabled people are their disability and nothing else.

The idea that the writers who created that caricature would have cared to make her a character is naive in the extreme.