One of the best examples of disabled character representation (in a movie/tv show not dedicated to topic) is Joey Lucas from the West Wing.
She is a deaf political consultant who is played by a deaf actress Marlee Martin. Let me repeat- she is a cannonically deaf character played by a deaf actress)
She has an interpreter named Kenny who is handled wonderfully. During scenes where Joey is speaking, she is signing, the camera is on her, and her interpreters voice comes from off-screen. The camera never rests on him when Joey is speaking, only when Kenny is speaking for himself, not translating for Joey.
Joey is a reoccurring character who is often referred to as one of the most accomplished political consultants who does not work directly for the white house, and she is the one they always turn to in times of great need.
Just, Joey Lucas everyone.
(gif by kateysagals)