if she can't understand you with the language you are writing, I take it that she use sign language to communicate.
Does she use sign language? If not, she'll probably need it as oral only is not going anywhere for her. If she does use sign language, she'll need someone who is experienced with deaf people like her.
Kalalau's Korner: Daily Deaf Adult Literacy Program (DDALP)
Another thing that help, Typing class... <--- this will encourage her to follow the flows of grammar as she practices typing (hopefully they don't do the head phone but my school never did that, they just made me look at letters and type it as I read it)
