I don't know if this was an error or intentional but it seemed kind of strange at the time.
When Nikki hugs you from behind and you can choose how to handle the situation. I chose to tell her that I was in a relationship. After this she backs off and leaves you alone. BUT if you sleep on the sofa and pull her towards you the rest of the game plays out as though you never told her anything. She never mentions your relationship again and everything plays out as though Nikki and the MC are together. Is this an error or does Nikki just not care that the MC has a GF?
You have solid points from perspective with this all here.
Others i know personally have pointed out to me specific scenarios not unlike what You've stated here.
Obvious inconsistencies
may be a plan or motive Nyx has, i can only guess.
Unless it's just blatant oversight, tooo many things going on.
Things start getting left undone, overlooked, incomplete, loose-ends never sorted, ect ect ect.
Erynn's path is riddled with these inconsistencies.
Almost as if, an editor took a writers story and butchered it.
Leaving things
not like what happens in actual life or as some ppl say, "not like IRL".
Can speculate all we want, wait and see or .... not ever find out 'why'.
Ball is in Nyx court on 'why' or 'WTF is the deal'.
Would not advise to hold Your breath on it and that applies to us all.