I remember seeing from reddit, that LNAE is a subconscious deep dive into Six's psyche. It was a bit chopped in terms of relaying what aspects of Six's psyche it was (possibly due to language barrier), but I remember the OP said somewhere along the lines of:
The School section was Six's "morals". The tower convinced her to abandon the morals you've been taught (i.e, imagining the bullies dead and The Teacher dying), and leave them to fall into the deep recesses of her mind so that she'd be free to do what she needs to do, but numb to her future decisions' moral implications. After all, you don't need to feel bad if you're killing a monster... right?
The Train Section is meant to represent Six's "Train of thought". In order to proceed forward and get to the end of the finish line, she must "disconnect" the rest of the wagon that's dead weight-- the critical thinking aspect, in order to keep chugging along. Outrun the conductors of your mind that make you second guess what you're doing, because in a high stress situation, there's only three choices to be made: Run, kill, or be killed. I'd actually like to add that the Conductors soothing the Guests on board is akin to the Music Box's soothing methods to prevent Six from lashing out. There was another thing I was going to mention, but it slipped my mind so maybe I'll remember it later;;;;
The Mansion's section is related to Six's "Memories". (This one, I actually mentioned in my thread too, so I agree.) In order for Six to move forward, she must "cast a white sheet" on them, so that she won't be held back. If she makes new ones, evaporate it as quickly as you've made it. Squash any semblance of memories being formed and keep it in a cage, just like how you squash The Naturalist.
All of these combined allows Six to abandon Shadow Six, and Mono.
The OG post was a whole lot shorter, but it actually gave me a deeper insight to just how much LNAE is about the Tower's subliminal messaging towards Six and Shadow Six.
Holy hell, is the Tower such a manipulative bitch I want to explode it with 1000 dynamites