Rehab and NA. The only way to help him is to do what works. From your signature I can tell you already know.
Can you take her to an Al-Anon meeting? This may help her to help herself.
I love the one Interventionist who says "We will no longer love you to death." That is my favorite thing that is said and I swear by it. Every time my active alcoholic father asks me for help I say this to him and myself. It is the only way I can cope because I just want to take care of him.
Someone call the Codie police!