I'm not a ALR scholar but I am someone with a very personal experience with Alcoholism, and ALR isn't the type to end up functional or high functioning.If she goes that way she will end up as a Heavyweight Betty i.e because she's big needs to drink more just to get a buzz and drink more and more often to feel the same and end up bluring the line between buzzed and drink and will develop a addiction to booze by the shot. Ironically at this point of alcoholisim she wont put on weight as she wont be eating she will be geting most of her calories from alcohol, ironically one thing to look out for if she heads this way is her eating Bar Snacks or craving them, she eats a lot of bad quality foods but when she starts craving thinks like Pork Scracthcings, Crisps in odd flavors or odd mixes of them she'll be very much into it.
I honestly think if ALR does develop some kind of adiction beyond food it will be the end of her, and I honestly don't want to see that as the decline is big and nasty and hard for those around them, and ALR had the money around her her to support a serious alcohol problem for a while at any rate.
As much as I hate to say it there are genetic predispositions thou additions that upbringing cant correct or present as one thing and morph into another after some time because the high a person gets off something is no longer enought and they need to spice it up like with Foodie Beauty starting to experiment with Food and Drugs, Alcohol, Weed, Coke, MDMA an other narcotics it's just filling a void they have socially and emotionally that they dont want to confront, with Foodie I think she's just stuck in her highschool era teen phase and she never got to fufill her dreams of that part of her life, but Amber I think honestly has deep emotional holes socially, developmentally and physically she's scared of adressing at a very personal level shes not even aware of other than a slight niggling thought at the back of her brain.