YES YES YES! I really hate how everyone is trying to blame her parents for not knowing where she was at.
COME ON GUYS! We've all been teenagers before, we all know it is possible to sneak around and do things behind their backs. She probably told her parents she was sleeping over at a friends house or something. The rave was 16+, she was 15, would a few months really have made that much of a difference? Uhhh no.
Yeah guys, come one. Blaming her parents is BS. She was 15, big deal, since as you say, 16 is just around the corner- there isn't a HUGE difference there- 16 year olds are just as inexperienced. Hell, I've seen 20 year olds do dumber things. I never understand the arbitrary 16 year old entry- if you're going to make a minimum age, 18 is at least a little better.
She could have 100% lied to her parents and now they are saying they knew where she was so they don't look bad. Be real, I'm sure everyone on here snuck to places they weren't supposed to be when they were younger- how would that be their, or your, parent's fault? And if they did know, do you really think they knew what the event really was? Doubtful. If they trusted their daughter, and she was with friends, and she told them she was going to dance somewhere and played it down, they surely wouldn't expect it to be a party as large as this, with that many drugs going around. Lots of parent are ignorant to what really goes on.
So, in short, leave the parents alone, raising a teenager is hard enough. They go against their parents often, or lie about where they are or what the events are they are attending,
all the time. The only way to control that would be to keep kids under lock and key- but that's ineffective and just creates maladjusted adults. I've got a close friend with a 17 year old daughter, her and her husband are amazing parents- top notch- but the crap their daughter does is just ridiculous sometimes, and they can't do anything about it short of locking her away- but they are smarter than that. Be real guys, the blame is spread to several places here (but really, bad "luck" seems to take the cake). The combo of an inexperienced girl, perhaps a douchebag selling shitty pills, an overcrowded venue with not enough access to water, a bunch of irresponsible jerks not paying attention to what was going on, and whatever else, seems to have been an awful combo- not one person or thing is at fault.