It seems to me that you should start by using her school books. Then you could think of other books in her reading category as you go along. Find out how well she can read and write. I assume this is an ESL student. She’ll be happy with any help she can get.
Have you done reading compreension?
Go simple on the first day. Never, call them names for not understanding a problem. Let her show you what she knows so you can see what she needs to improve on. Most of all just have fun!