I also want to explain to you a little bit about Georgia possession laws-- there's something called constructive joint possession-- and this is the legal basis under which your daughter was arrested.
Basically it means that she was constructively in possession of it, ie. she knew it was somewhere in the vehicle, and intended to exercise possession over it (smoke it, etc.) in the future. Joint meaning that there were multiple people there and while it was not in one particular person's actual physical possession, they all had that constructive intent. This is a tactic officers often use when finding marijuana in a car with multiple people, that's not actually in one person's physical bodily possession; the officers then arrest and charge everyone.
As I explained earlier, I think it's in your daughter's best interest to have an attorney represent her to ensure she gets into a diversion program, once she successfully completes the program, the charges will be dismissed. (A public defender is also very qualified to handle her case, if you get appointed one by the court).
*Also, if your daughter is not a marijuana user, and was just in the company of these friends, a very valid defense she may have is submitting to a court administered drug test. This will show that she's not a marijuana user, and help destroy the accusation that she was in constructive, ie. that she did NOT intend to use it in the future.
Again, I hope that helps! Please kindly take a moment to rate me using the stars as this is the only way the website compensates me for my time. Thanks so much, and please let me know if you have any other questions.