I identify with all you've said. You have all my admiration and kudos for getting your degree and following your career before it was too late. Very smart move even though some debt.
How you care for yourself during this challenge will set a good example for your daughter. I hope you can set up the network of support that you need, including Al-Anon and therapy. They can save the day and keep you going. If you can keep the communication open and straightforward with your daughter, she'll have her resilience to see her through this, too.
I am with my spouse and only in recent years, really understand that he abuses alcohol, self-medicating some major issues such as disability layoff after years of high-function; and now forced early retirement. He too, doesn't recognize the wine and beer as a problem.
I've waited too long and I don't recommend it. You've done the right things so far, and you've got a lot going for you. Best wishes coming your way.