There are a couple more in the past few years that don't post.
I would not put it "scared them" straight. I would put it, left them with no good option...made the guard rails very high, and applied electric voltage prods to motivate. AKA strong support to do the right thing. Kind of like a family intervention.
It does not mean it will work. It's more from the concept, leaving no stone unturned. We do it as much or more for ourselves. Like you did with Kay. Busy. I wonder if you would have been ready for this site, and Al Anon, had you not fought so hard for Kay. I wonder if due to who you are, and who your husband is, you had to fight with all you've got. And having done so, you were able to accept your powerlessness.
