norma is a stutterer on orange is the new black?

norma is a stutterer on orange is the new black? i was rewatching orange is the new black and i arrived to the norma's eppisode. wow, i didn't remember she was a stutter. so if you have not watched the show, she basically don't speak for 2 seasons and then, they explain that is due to a several stutter problem that she have. i think its the first representation about stuttering i have ever seen in a mainstream show, but idk how to feel about it. Because she is mute, basically, so i don't thing this is even a properly representation. WHY WHY can't they do a proper character, with their problems and life but they casually a stutter? It's that complicated?