I am the mom of a 19 year old alcoholic/addict.what I can say is that the amount of contact she's had with authority figures in this short time regarding alcohol is a pretty bad sign..it is unlikely that she will "pull it together" because she has not responded to any consequences..she's beyond "fun" and into "fun with problems" after that comes just "problems" in the spiral of this disease.
TJP and I have fairly similar circumstances and I sooo back up what she said..PAIN makes us change..when she causes you enough pain..you'll get down to alanon and do what they tell you..when she gets in enough pain, she will get help too.
There are ways you can stop making life comfy for her andlet her expeience what we call tTHE CONSEQUENCES OF HER ADDICTION..This is from a mom who had to let my daughter "wallow" in her addiction..on the streets, with really sleazy guys, she had to be hungry, dirty,broke,sick,tired, and not having any more fun before she chose to get into recovery..the really sad part about alcohol is that it can take YEARS avs. drug addicts who crash and burn sooner.
This is not her "fault" she is in the grips of something beyond her control..I stongly suggest alanon..it is what any reputable therapist/addiction specialist would reccomend..