This story is a sequel to I Am Her Servant

I have changed; so had you. For how long did you keep your love for me a secret?
I'm sorry, My Love. I'm sorry I am still alive.

Prior knowledge of "I Am Her Servant" is suggested, though there is a brief summary in the prologue. Inspired by "Still Alive" by Lisa Miskovsky.

You are my queen. I am your servant. We are both Changelings, separated by our fates. I will protect you with all my life and heart. If a Changeling could only love...

Inspired by the youtube PMV of Servant of Queen : Chrysalis Another Story.
Translated into Spanish by MasterSounds: http://mastersounds.deviantart.com/art/Mi-Deber-Como-Capitan-524799635

On a dark night filled with even darker magics, an insane cult attempts to give Nightmare Moon a body and life of her own, utterly separate from Princess Luna. But, when the spell is interrupted by Celestia, something unexpected is created.

Now, a little black alicorn filly named Nyx finds herself living under the care of Twilight Sparkle, only to be haunted by memories and emotions from her past. Is she Nightmare Moon reborn or is she simply a doppelganger with a soul and mind of her own? Can Twilight Sparkle protect Nyx from those who refuse to see past her dragon eyes and black coat?

Or, will Nyx be forced to inherit the sins that may not even be hers and become the greatest evil Equestria has ever known?