I sit alone atop my throne, the throne I should be sharing with her. But her jealousy got the best of her. She did not understand why the ponies of the town loved her sisters day light and they did not appreciate her magnificent night. I was blind to her obvious suffering. I was to busy basking in my own light to notice her fading into darkness. I didn't notice her until it was too late. I didn't recognize her anymore she was someone else. Someone who's only desire was to reek havoc on my, our subjects. I did what I had to. I had to vanquish this evil, even if that means  I have to send my sister away. When she is ready she will return to me, to rule by my side. Like we were meant too. My nightmares haunt me every moon lit night. The Nightmare Moon as that being called herself. What my sister became.