How can I help my friend?

One of my oldest and dearest friends has been struggling with alcoholism since her early 20s (she's 51 now). She got sober 16 years ago and was extremely active in AA and helped many people. She is an incest survivor and the daughter of an alcoholic father so she really made quite a remarkable recovery.

For the past 4 years, she has become more depressed and withdrawn. She's on antidepressants and anti-psychotics since she's had a history of manic episodes. Just this past year, she broke her 16 year sobriety and agreed to go to a 2 month residential dual diagnosis rehab.

She came home and drank 5 days later.

She immediately went into another dual diagnosis facility for another , came home and drank after 4 days. Her husband has hung in there with her but this is the last straw and he told me he's leaving her (they have no kids).

With her 20 year marriage over I'm not sure what will motivate her to stop drinking. Unless she really wants to stop I think she may drink herself to death. Is there anything I can do to support/help her wh

ile at the same time not enable her? She and I have known each other for over 30 years and she has always been my rock (with the exception of the past few years).

She has not been to AA in a while as she's been dealing more with her mental issues.

I am heartbroken over this and so so worried. Any input would be much appreciated.

Thank you.

JD