Good morning What 
Great to see that you are still so resolute, and also great to see the sheer number of other posters on here supporting you - IME of MN these are people who will not leave you for as long as you need support (I had a thread of my own in OTBT that went on for over a year and the same core of people who were supportive at the beginning were still there a year later!) MN, for me, comes into it's own when a poster honest enough to ask for help and in a dire situation, comes on here and tells their truth and asks for help; it's like a group of mother hens gathering around to help, comfort, and advise (in so far as strangers can) 
Can see you've had loads of good advice on here, but one post especially really grabbed me by the throat and it was iamEarthymama as she speaks the truth (but sadly a truth learnt in the worst possible way) and in sharing her truth she really is helping you big-time by explaining the realities of being the Adult Child of an Alcoholic (ACOA - yep, it really is a thing!)
BUT I am the Adult Child of an Alcoholic and I tick every bloody box. I have recently started having panic attacks and can't cope with the most mundane of tasks.
^I saw a therapist recently as I thought I was going mad, truly mad.
She has opened my eyes to how my unconscious processes affect everything in my life.^
I applaud you with all my heart as your DD won't be writing this in 50 years time, you are doing the right thing for both of you.
I wish you both all the joy Life can give. The next part will be hard but when you struggle think of the adult you are helping your child to be xx
EVERY single word IamEarth wrote is true - painfully but accurately true. There is a brilliant book (albeit with a vile and v 'American'
title) called After The Tears and it is a superb resource for all ACOA, most of whom go through life fucked up by never really knowing why, then they either see a therapist or read this book (I did and it was like looking in a fucking mirror) and suddenly they realise the damage done to them by the Alcoholic Parent. It might be worth you getting if only to expand upon what the incredibly kind IamEarth has already written - in acting now, you are saving your child and in no less a way than you would by dragging her out of a fire; simply on a slower timescale but that really is an accurate analogy.
for *IamEarth
So, have you decided what your plans are What? - is DD in school whilst you are pondering which is your best exit route?