Good points. My understanding is that any testing for drugs may have been too late to be accurate. Others here have said that the drug used is known, where it was acquired from, etc. If that is true, it will hopefully come out.
What happened was terrible. The least we can do is try to understand what could have been done to prevent it.
It is obvious that changing the attitudes of people who poo-pooh this kind of stuff is critical. And that includes the whole “safe sex” mentality, that people are animals and can’t help but behave like animals.
Changing attitudes is an uphill battle, isn't it? It really saddens me to think that this whole episode would probably never have happened if that girl had had one person there who actually thought of her best interests instead of their own gratification.