baddisease

This one. I think it was this one anyway. And you can find a lot of less-than-positive stories about the Atlantic and Pacific Groups on a few websites, like Orange Papers.

It was discovered on this website that Lana del Rey was a member of a group called the Atlantic Group (a part of Alcoholics Anonymous) in her past. The Atlantic Group is infamous for its cult behavior and for its treatment of young female members. I think it's obvious it's about them, especially given the reference to deadly nightshade, also known as A. belladonna which was used as a treatment for alcoholism. In fact, several of her songs reference AA or AA's ideas.