I am a language teacher, but I teach American Sign Language, which lacks the written aspect. I also have a severe learning disability, dyslexia, that makes it very difficult (or practically impossible) for me to read and write. Before you continue with your student, I would make absolutely sure that they have been tested for dyslexia and other similar learning disabilities. Don't assume that your students lack of the ability to read is based in something superficial (disinterest, nervousness, laziness, etc.). If your student does have a learning disability, being told that if they would only "try" to read, they could easily do so could be beyond frustrating, hurtful, and damaging. I hope everything works out for you and your student, and I would be very interested to hear back from you about whether or not your student has been tested for dyslexia or other learning disabilities!