Ok Ragnarok. I can see you came to play. Some arguments were solid, others cow dung. Let's dive in.
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.

Bernard's programming is able to recognize Lenore and react accordingly. Here's what any programmer without a death wish would code :
If kill_phrase and not(me) then kill
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.

That is also how I triggered the encounter. Point to Rag.
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. :-/
I'm not claiming she studied only anti-magic fields, just that it was part of the things she studied. From her notes :
I hypothesised that these items are no mere legends, and indeed, in this treatise I will endeavour to explain how I myself created items with both antimagic properties, and ones using the magical absorption of Sussur Tree Flowers as a power source.
She created items with antimagic properties. Also other stuff. I bet she also made soup and her bed. None of that is the focus here. What matters is that she definitely made items with antimagic properties.
and we know she had the ingredients to make [Omeluum's potion].
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?
You're correct to point out there's no direct proof Lenore made Omeluum's brew. But imagine you found an abandoned kitchen with a bunch of italian cookbooks, flour, tomato sauce and mozarella. It would be safe to assume the chef tried to make a pizza or two, even if the kitchen also contained pickles and strawberries.
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.

I could, yeah... Especially if I found a book close by called "The psychotropic properties of poppies", and the nextdoor neighbors told me, "if you're looking for poppies, go there. That guy
definitely has poppies."
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.

Yeah, that's a good point. I kind of pictured Lenore drinking that Tongue of Madness potion every day for a long time. Maybe that slowly drove her insane.
It's still all just a guess, but because I came up with it it's true and anyone who disagrees is a bad person with bad thoughts in their bad brain.