Hello, I have a friend who is d/Deaf. Her hearing impairment is profound and she has worn cochlear implants since she was young.
She communicates very clearly in English and relies on lip reading. When she talks, her style of speech is not the same as for people who can hear: there's less variation in tone and she's quite loud. If you didn't know her you might think she was being forceful or aggressive, but she's really not: it's just that her speech has developed like that and she can't pick up on the nuances in tone and volume that hearing people use.
The thing is that she has not been treated brilliantly by professionals she comes into contact with because of the way she talks. She is massively clever and a lovely person, and not at all aggressive or rude: she's just louder than average as she can't calibrate volume like I can. It's not extreme by any measure. But her communications style is misread: people treat her as if she's not very bright and as if she's being difficult.
What I'm looking for is some online guidance or articles about the differences in speech that d/Deaf people have, so she can provide some evidence that she needs adjustment/accommodations. Does anyone know any? I've been Googling all evening but I can't find the right place to look. It's just not fair to have someone lovely treated badly.