You might take a look at Hazelden.
I'm currently in the intensive outpatient program in Chicago. They have a couple locations in NYC. Inpatient and outpatient services depending on needs. Another alternative worth evaluating.
I'm 4 weeks in to a 6 week program. If I had the flexibility I would prefer an inpatient program but work and family made this route problematic for me. Regardless - the structure of any program is very helpful in recovery. I've found it difficult for me to recover without the structure.
Agree 100% the Alanon and family programs will be a big benefit to you as parents. Addiction is a family disease. Your daughter is fortunate to have you in her life to help her figure this out and support her. Best wishes for you and your daughter.