I gave up drinking close to 20 years ago. Kudos to you for trying to stop the seduction of alcohol. That is a very brave first step.
Regarding your daughter, I agree with sarahsweets, your daughter should not be blocked from you. Trust me, I know the pain when your partner wants to end the marriage.
Hang in there and confide in some friends that you may have obtained from the treatment facility.
You must return to the you that didn't used to drink, you must learn to HATE alcohol. That is how I did it. I have never touched it again.