Yup, it was a life-changer for me, too. Got me to Al-Anon, when I read that she refuses to treat anyone who hasn't been to AlAnon. Her case studies were so eye-opening.
Funny thing is, I put off reading it for the longest time, because I didn't think I was the Woman Who Loved Too Much.... I thought I Loved Too Little.... at least that's how AH made me feel. I don't know why I finally picked it up but when I did, I learned that I was definitely the type of woman she was talking about!