Sam!! I need your help~

Sam~
I need your advice about teaching an adult who is not exposed to the english at all.
She doesn't know the alphabet. Of course, phonics, either.
(she said she learned that at her school days, but she can't remember at all)
She asked me how to study English. So I promised to tell her the way to learn it and
help her with her studying English. But to be honest, I don't know how to handle it.
I've never taught a person who does not know even alphabet at all.

I think, first of all, I have to show her alphabet again. And then....
what? Phonics? or
just tell her several words and let her memorize those words ' spelling and pronunciation?
What am I supposed to do? Oh! I really want to help her.
She is old ... maybe about 40-50 years old ??
She really want to learn English. I want to be helpful to her.
Sam~~~ help me!!!