CrazyPaul,
Perhaps your supervisor is keeping your response notes for evidence that she is accomodating you. If you are concerned about breach of privacy or discrimination against you then, use a carbon copy sheet. File your copy, this way you have a copy of everything should any legal issue come up.
You also mention there are several Deaf in your workplace. Your supervisor's attitude may not be directed individually to you personally, (unless she has made discriminating remarks pertaining to your deafness), but perhaps, it is an generalized annoyance that she has to use this method of communication many times over in the course of a day, making it slow and tedious. You could make a constructive suggestion to ease the situation for all involved, Deaf and hearing alike. Besides, you have to face the same people tomorrow and the next day etc.....Truce.
