Apologies, I posted this a week ago in slj, but although I got 
several good recommendations, I was hoping for a few more.  
Thus the repeat posting with fjlij added.  If there are better 
places I should ask this question, please tell me.

My Japanese friend wants me to help teach her english.
Right now her english is pretty limited (Jr High school level?).
Most of her knowledge comes from NHK lessons.  I want to
find a textbook, send her a copy, and work on the lessons 
together by phone and email.  In Japan a couple weeks ago 
I looked for books but almost all seemed to be not much more 
than phrase books.  I also need a book with instructor material 
in english since my japanese is worse than her english.

I think probably there are a lot of people here who currently 
or previously taught english in Japan and might have a 
recommendation for a good textbook.  What did/do you
use?