No offense, but I think you're being unrealistically rigid in your description of how people behave on different drugs. There are no definite rules about it. Yes, there are sets of behaviors that are common to particular drugs, but some people exhibit varying degrees of those behavior. I've taken most of the drugs you listed, and your descriptions don't necessarily reflect how I acted.
For instance, with ecstasy, LSD, and mushrooms, you can be somewhat aware in one moment, then completely lost in hallucinations the next, and then fade back into being aware of your surroundings for a little while. These drugs aren't predictable enough to know how all people will behave on them. Plus, a person's own personality has some influence on their drug behavior.
Personally, I think EL definitely looks like she could be tripping on ecstasy. Remember, she might have been attempting to control some of her behaviors because she was in the middle of a hotel (albeit somewhat in vain). Also, we might be seeing the beginning of her trip, before it fully kicked in. She could have become much more messed up afterwards.
All I know is that from the moment I first saw the video, before I heard anyone else's opinions (other than it was "creepy"), I immediately suspected drugs, and specifically hallucinogens/psychedelic drugs.