Btw--Michele and Virginia were great supporters of the late Shirley Glass. You will get excellent information from her book as well as DR. They will work together well.
I'm a BIG fan of Shirley Glass. Can you tell us where she advocates this "be their friend" technique? I've looked and looked, and can't find anything even close to this advice from her, and it would surprise me, since "healthy boundaries" is THE #1 thing that Dr. Glass preached.
Not only can't I find it in any of her teachings, I can't even find it in DR. It never did seem to fit the rest of Michele's teachings, and this one article always seemed to be an outlier to me.