I believe her intension was to say that the whole series was her book. It started with Life & Stuff (her real life) and then as her book went on and she changed her life in the book probably starting with when David first entered the show.

I don't know, just one of my theories. ;)

Hmm.. That does work out right..

The book started at the end of the second season when Roseanne Conner gets a writing room.