Luna lay on a bed in her chamber, and gazed at the replaced items her sister had somehow managed to acquire. This was one of the few times they managed to spend together, the time where they switched shifts and each got some well deserved sleep.

Celestia had just finished tucking Luna in she she felt it, a cottony mass was being held against her mouth. Her eyes shot around, now alert to notice A white fetlock was holding it against her mouth, revealing a sobbing Celestia holding the pillow. Suddenly she started humming some sort of macabre Lullabye.

"You lay...silently before me...youre tears, they mean nothing too me..." She began, forcing the words out among choked sobs.
"I don't care enough for you to cry, goodbye. it was always you that i despised..." Luna began to lose conciousness. "Here's a lullabye to close youre eyes...goodbye..." her voice started shaking. "goodbye" she said once again, quiter as Luna felt the last dregs of energy leave her dying body. "goodbye..." Celestia chocked out in a whisper before her only flesh and blood collapsed, dead on her bed.

Luna woke up with a start to fnd a white fetlock trying to calm her down, "it's okay little sister-" her sister began to say only to be thrown off as soon as she finished those words and thrust out the door.

Luna looked around her room, and noticed some of her belongings replaced, this sent a little jolt down her spine and she gulped once in fear. However the simpled act sent a small jolt of pain down her throat. She felt the offend area and found two marks on either side indicating some pressure was recently applied there...choking her...

needless to say this shocked her as only royals, people with very good reasons or a royal note were ever allowed in her room. But who had such a reason for this?
She knew she wasn't well liked but...to have an assassination attempt this early after her return? She didn't know what to do and ordered her guards to bar all entry to anybody, including her sister. No scratch that, ESPECIALLY her sister.

~~~~~~~~~~~~~~~~~

Celestia stood outside Luna's door, NIghtmares? But Luna was purged or Nightmare Moon, so how? Suddenly she noticed a slim pony perched ontop of a nearby tower, hands held to her head as if she was probing something with magic. The Pony was a shadow but she could sense the figure turn to her and suddely smile.

No...Not...Could it be?

The pony sense her thoughts, smiled and whistled her trademark tune to indicate it really was her.

"Philistine..." Whispered Celestia as the figure leapt away quicker then any normal pony could follow. She knew this pony, a remarkable assassin based off the legends, but is she really after Luna? Celestia prayed to hey parents not...

Mini-chapter written because i knew if i didn't write i down i'd lose the idea. If you know which song that was ealrlier give yourself an e-cookie!

edit: switched this and the next chapter as I think it flows better.