Okay then is it possible she came here to die? Maybe reading this hotels past and how people came there to commit suicide? I know she gave up on her college education in Canada, but I thought she was looking into a different college here in the states. I find it weird I'm even suggesting suicide, because upon first seeing her story i felt something was wrong. Then I watched that Dr Douglas James Cottrell video about her case and thought maybe he's onto something... in his video she went in there on her own either to get away from someone or avoid the voices?
Having access to her browser history (computer + phone), movie collection, youtube liked videos, diaries, etc would give us an idea. But we don't even know if the police accessed her phone to check it, let alone what would be back in Canada.
If this was a premeditated suicide (obviously all is premeditated, I mean pre-planned well in advance), she did not come across as full of hate for society and/or so self indulged that she felt endangering others physically and mentally by subjecting them to drinking water containing her decomposing body. Additionally the elevator footage just cannot be explained by that. She entered the tank with no means of weighing herself down, so she either anticipated passing out from exhaustion and then drowning whilst unconscious or she had devised some method of forcing herself to inhale water to counter autonomic reflexes that would normally prevent it.
It is a nice theory for a ghost story. If you still believe it is true, that is your call but the questions that would need to be answered for me to even give it the slightest consideration would be:
1. Why would she subject random people - tourists and locals - to drinking water that contains remnants of her decomposing body. EL did have psychiatric issues - but she was not a psychopath.
2. How did she plan on drowning herself? Was it only that the death was pre-planned and then last minute she decided on the method?
3. Why did she act the way she did in the elevator video if this was a premeditated suicide. I would imagine if your plan was to kill yourself, you would walk out of that elevator, head held high and nose to the air, or perhaps more subtle with head down and hood on. The playing around in the elevator just does not correlate with someone who was about to drown themselves to death.
I don't think any of those questions can be adequately answered to even come close to supporting the theory this was something premeditated before the flights were even booked.
If it was a spur of the moment decision, then one might suggest she did not consider that she would be in the drinking water supply. But if this was planned well in advance, there would be cycles of mood, and without a doubt that would be something that would enter ones mind. Unless you had a massive inherent hate for the world and/or thought of yourself as some superior being and thought it would be particularly nice to force people to drink your body and your blood, i cannot see how the pieces fit together on this theory. The limited info we have suggests EL was neither obnoxious, full of hatred or in possession of a god complex.