Dude, you're trying to make everything so cut and dry when it really isn't. I'm not saying there is some grand conspiracy, but it's not likely that someone that appeared to be as incoherent as that girl was, would end up where she did by her own accord.
She would've had stumble around the hotel floor she was on and either push the button of an elevator to go to the basement or lobby or enter the elevator as someone was coming out of it (which someone would've seen her). Or she would've had to take the stairs all the way down there. Again, she was clearly belligerent, so to do either of those "very very simply" as you put it, is possible, but not that likely given her condition. Then to open up that big freezer door (if in fact it is the same as the people showed in the video) and close it on herself is still kind of hard to say it simply happened like that.
Anything is possible, I'm not disputing that... but you're just ignoring rational and logical points.