The radio report mentioned the possibility of rohypnol. I don't recall the exact wording, because I wasn't paying attention to the story until I heard that. Like 95% of the stuff floating around on this case, it is speculation.
I have no idea as to the accuracy of that rumor, but if it proves true, it certainly increases the chances that a crime was committed at the frat party. Still doesn't prove it by itself, and could be a false rumor. All I know right now is that both sides appear to be trash. Who is the innocent trash and who is the guilty trash? I have no idea.
I can't say for sure, needless to mention, but if she was slipped a roofie with a mixed drink she should've been knocked flat on her ass for the rest of the night, and I have a fairly decent basis to say that because I've taken rohypnol before. And my body mass is no doubt far greater than hers.
But, I'll definitely grant that different people's body chemistry can react to drugs in very different ways. If she was slipped a roofie it should've shown up in blood tests. I guess we'll see.