One thing does, as mentioned by the OP
That is statement once again based on theory ... wich was missinterpreted as fact ...
Bernard will try to kill the player upon hearing the kill phrase even if he thinks the player is Lenore.
Bernard is not Warforged, only Automatron ... therefore Bernard is not self-aware, or in other words he do not think at all ... he simply recedived a comand phrase and reacts acordingly to his programming.

If she designed the phrase as a defense mechanism, perhaps to trap prying intruders, that seems like quite an oversight.
What is oversight about it? All she need to do is never say this particular phrase out loud in his presence ... we dont know Lenore, we dont even know if she was talking to Automatron except when she was reciting those phrases.
In my opinion its pretty clever, to code comands in phrases from an Theather play ... those are not phrases you usualy say during work.

The point here is she could forget the phrases ... so she write them down (just as when Wizard write his spells to spellbook) ... but anyone else could find her notes and then Bernard would be useless as guardian once again ... so she smugled there single trap comand ... if someone get to the tower, he would like to try every comand he find, just in order to find out what else they would do, or what secret they could potentialy reveal ...
I should know, that is exactly how i get to reciting that sentence.

In fact, given that she lived alone, she's the only who would've known of the phrase.
I believe that is not corect, as we have seen the tower was empty ... yet her notes was still there ...
Anyone could find them there ...
I dunno why ...
Maybe she was affraid that she will lost them, wich would mean that her tower (Bernard seem to have acess to whole tower, since he is using that transportation mechanism when you shove him down) would be no longer habitable for her ...

Maybe she left it there for purpose to "test" what will happen, maybe she was hoping that someone will get there and wanted to find out if her trap will work ...
Maybe she simply believed that her security is well enough to left the tower ...
Maybe she simply forget them there ...

And maybe something entirely different. (Including that option that nobody from Larian gived it this much thoughts)

That makes her the likeliest person to die from it.
Not at all ... that is proably the reason those phrases are coded into quotes from some play ...
So she dont say them accidentaly and make her own creation to kill her.

On the contrary, since she is the only person who actualy KNOWS what phrase she cannot speak out loud, she is the only person who have litteraly nothing to say.

I mean we are here limited by gamedesign that remember the phrases for us ...
But i believe this is exactly the same situation as Gale had with that Magma(?)Mephit ... you need to say his name and you need to say it corectly ... maybe if someone would say the phrase incorectly, the robot would also start killing rampage.

we do know she studied anti-magic fields
Come on, one and half floor in basement is taken by some machine that is able to squeeze some energy OUT of Sussur flower, and power up whole tower with it ...
Please dont tell me you are willing to ignore this and keep claiming that she only studied Anti-magic fields for their anti-magicioning effects. :-/
we know what the intended effects of Omeluum's potion are
Yes, WE do ... but that does not mean she did too.
and we know she had the ingredients to make it.
Yes, she did ... among many other things ... including other mushrooms, flowers, crystals etc ...
All parts of her research, quite possibly ... the only thing that connects them all is the fact that they are all Underdark resources ... why are you ignoring them?
Keep in mind those are dangerous ingredients to have around for no reason.
I never said its for "no reason" ... i just believe there are other reasons than just to brew exactly that potion Omeluum told us about.

Even if nothing else, she could aswell ben just researching possible uses of those mushrooms.

Or she was curious about how (and if) their effects are affected by sussur anti-magic field.
If she wasn't using them, she would have probably gotten rid of them.
Why? Except for then your theory would fall appart?

I mean ... there is lot researchers in the real world, that are holding "potentialy dangerous" materials for "future research" ... the point is, if you know that thing is dangerous and handle it acordingly ... then its no longer so dangerous, at least not in your eyes ... and at least for some time.

I mean come on havent you seen any american action movie with escaped virus?

Even if she didn't brew Omeluum's exact formula, it's plausible that a potion with those ingredients could have a similar effect.
Its certainly posible, yes.
But there is equaly high possibility that she was brewing someting else entirely.

I mean if you find that someone is growing a poppy ... you could acuse him for using it to create opium ... while he was only using it to brew sleeping drops.

Im trying to say that the possibilities are endless, especialy in alchemy ...
You brew somethig ... add some other something, or you dilute it with something, or you destile it instead of brewing it, or you dry some ingredient up instead of squeeze just the juice out of it ... AND VOILA sudently you have something entirely different.

I'll concede that my hypothesis fills in some of the gaps with suppositions. But there can be no doubt as to the kill phrase's intent nor to the presence of cultivated Tongue of Madness and Timmask Spores in the tower.
Now when we talk about those mushrooms ...
I would also like to point out possibility that she created that "killme" comand after experimenting with Tongue of Madness ... and had a little accident.

Same here.
