This seems fairly standard if you are AH, who has in fact said in the past about herself, "you can't become an alcoholic if you stick to red wine".
I mean, I'm pretty sure you can in fact become an alcoholic on beer; and her thought process appears to be "because wine is a thing my parents never really got into, and thus I have no predisposition", but IIRC, that is what the addiction treatment industry calls "stinking thinking"; and again, she told Nurse Erin that she "used to" be addicted to cocaine, thus she is an addict; and addicts have told themselves some amazing stories to justify keeping being addicts, including nonsense like how mixing depressants with uppers supposedly cancels both states of affairs out, etc., etc..