iamthird......It is called "the lost years"--surviving a mother and daughter's worst nightmare
by Kristina Wandzilak and Constance Curry. Kristina is the pretty blond interventionist that I spoke of (the daughter with the addiction).
You can get it used on Amazon pretty cheaply.
You will recognize her picture on the front cover of the book.
(if you read it--I would love for you to let me know what you think of it).
dandylion