Yes it's her method. I bought her book and like her idea very much. But I got scared to try it. I think if you put a cotton temporary binding on it for a long armer it should work out. I think it will not stay completely even and square though..that wasn't a huge deal for me.
Incidentally, I finished my top which I can post a picture of, but I did use interfacing.I used French fusible on my race shirts which is good but When I did my baby quilt I used featherweight Pelion from joanns and I really like that cause it seems light and soft. I am going to buy a long arm so I won't have a finished product till at least November and then plan to experiment without the interfacing, cause I love to make them but would prefer not to have the extra step.