Speaking only from personal experience, as a twenty six year old female, I've had an eating disorder (anorexia officially diagnosed at 15) for half of my life, and can say that in my experience drug abuse (especially uppers, amphetamines) was a major symptom of my eating disorder in that the initial use started because of the extra weight loss the drugs caused --- only bringing this up because in Christina's case, given her height and weight (which is close enough to mine) IF she were drinking alcohol and not eating (knowing the effects that has on me) it would be enough to totally lower her guard, inhibitions, and instincts---I say this in no judgement---just sharing what I know regarding my own situation and IF Christina did mix other substances that evening to the mix--it just magnifies the effects---I'm not saying Christina even has an eating disorder, or substance abuse problem---I'm just theorizing from what I know of my own situation and how very badly a fun night out with "friends" can end (in my own experience)..... I hope Christina is found safe and soon! So young, just out supposed to be having fun with her friends, it's terribly sad for her family! I'll be saying special prayers for her and her family tonight! Again, did not mean to ramble, or cast any accusation towards Christina, just sharing my thoughts.....one of many.....I still think it has to be someone known to her involved.....