Please please please investigate other alanon meetings!!! Just because that meeting didn't feel right doesn't mean others won't help. Each and every single meeting is different. Even meetings at that church at different times will be different. Why? They will have different people in them. It can totally change the dynamic.
I guess no one has told you what ALL newcomers are supposed to be told. Please, for the first month, try to go to 30 meetings in 30 days, (or try to go to 30 meetings in 60 days as I find it more reasonable for families) but each meeting should be in a different place or at a different time from the ones you have gone to before. This helps you find that meeting that will help you. The setting where you feel more at home. The one where YOU can be helped.
They read from the book and that is all they did at that meeting because that is how they were comfortable. In other meetings, other things will go on, but you have to go to those meetings to find them. The beginnings are mostly read from the book as that is how they are started, but after that it can be different depending on what is going on. So it can be VERY different.
Please don't give up after one meeting, or stick to this one place and time because it is easy and convenient even though it doesn't really fit you. Explore your community because you might find a group that really, truly helps. Each meeting is different, even if some of the same people are in the meeting. I don't know if alanon will end up being what will help you, but if you only go to this one meeting, you won't know if it could help you either. My husband's favorite meeting was one I could NOT stand, and that did not help me at all. My favorite meeting was one he got nothing out of. It actually was great, because then one of us could stay home with the kids while the other got a break and a meeting. We actually budgeted about 2-3 hours per meeting so that a real break could be had - meeting and a walk in the park or trip to the library or cup of coffee or whatever.
I am truly sorry that your DGD is so deep in her sub abuse. I doubt she is near ready to get clean. I think she may need to see that you are serious, and she likely needs to go to a foster home, that sort of serious shock, deep change, to get that you are not just going "wah wah wah" like Charlie Brown's teacher. She will be hugely angry at you, but if you want to save her life, then I doubt that you have any other choices. She clearly isn't serious about IOP. I think you are wasting your money on the IOP. YOu should tell the judge you have paid out of pocket for IOP, and she is still abusing substances she is sneaking into your home.
By the way, she is on house arrest and you are letting her have friends over and trying to make it fun? What are you thinking? Why are you doing this? Where is your head? If she wants fun she can play a game of dominos with her grandma who has given EVERYTHING to make her life decent. Until she has cleaned up her act, she has not one person in her life currently other than her family that she needs to see. She does not have a decent friend that you want in your home or her life. Stop inviting these influences into her life. Do you intend to purposely sabotage everything you are trying to do? Cut off her social media and computer access if you have to limit the computer to your bedroom with no wireless router and only a wired one to a computer in your bedroom. Nail her dang window shut. Go through her room and strip the dang thing of EVERYTHING but what a foster kid would have. Make sure she doesn't have a lighter or anything else up there, and then make sure she can't get out that window. Then don 't let her friends anywhere NEAR your home. Don't make them a reward for good behavior, that is what ice cream is for.
I am not joking. If you want to stop this, you have GOT to change her world radically. I think foster care may be an option, but even that puts her around kids who are using substances more often than not. It isn't going to put her around kids who are good kids. I am sorry to be harsh with the paragraph above, but my dad taught the gang kids and that is what he would have told you. He would have said it with love, but with tough love, even the part about ice cream.