Petite helping out Mother

Starting to get more and more attached to this bizarre version of Nyx.

There are some significant differences with this universe and the Penstroke Pony Nyx universe.

This Universe is technologically advanced in that they have vehicles and fire weapons (like Tanks and bullet trains).
It is akin to Jules Vern's type Victorian style science fiction.

Twilight dies as a filly before being discovered by Celestia being a victim of the great Canterlot Earthquake.
Only shining Armor survived the family being permanently crippled as a result.
He becomes a weapon Smith instead of a soldier.

Due to causes and consequences Pinkie Pie was born in a French nation in Equestria (far from Canterlot).
Because of distance she never became the element bearer of laughter.

Sunshine Shimmer is a kind and gentle mare who pretty much is the Twilight Sparkle in this universe.
Element bearer of Magic she later ascended to an Alicorn and is tasks to take the position of Princess of the night.

Luna didn't survive her possession of Nightmare Moon. She is totally swallowed up by the latter.
When Nightmare Moon was defeated by harmony the only thing that is left were bits and pieces of shattered armor to the
horror of Celestia. It was thereafter that Celestia choose Sunshine Shimmer to take the place left void by Luna.

So in fact Nyx Petite Pie is not only NMM reborn but Luna reborn also.

Nyx Petite Pie was not created magically in the open but through a womb.
(via some cult ritual closely resembling the one described in Past Sins though this occurred in the French nation of Equestria)
In other words she was carried to term by Pinkie Pie and she was born the traditional way.
Which explains her curled mane having the same color as her mother's manes instead of dark purple.

This Nyx never became a cutie mark crusader again due to location.
She is also born the traditional way meaning that she is 7 to 8 years the Junior of the Cutie Mark Crusaders.

There was never a third Nightmare Moon incident (though it almost happened which was around the time Nyx stepfather was brutally murdered while attempting to save Nyx
This also calmed down Pinkie Pie later in life).
After wards Celestia choose Nyx Petite as a new apprentice (also to keep a closer eye on the filly).

Eventually as a young adult Nyx refuses to be crowned princess (because being a former Nightmare Moon majority public opinion was dead set against her).
Instead opted to join the army and later the Special forces in honor of her stepfather (former Special forces operative) who died trying to protect her.

Nyx Petite has no Princess ambitions opting to live a commoner life but that doesn't stop the Celestia from that universe to reawaken her sister Luna who is reborn as Nyx.

Nyx is (c) to penstrokepony.deviantart.com/