Regret Can Last Forever

Day 10, Year 1

This is my 10th day on the moon, my cold, empty prison. There is not much for me to do here. I have seen another shooting star, and wished for something to do here. Nothing has happened yet, so if it will come true it will probably happen tomorrow.

Yesterday, Nightmare Moon tried to resume control over me, and was successful. She tried to fly away towards Earth. For a moment there, I was worried she would succeed like she did controlling my body, but suddenly, there was a flash of yellow, and immense pain. She shrieked and fell back to the moon.

Tia probably cast a spell to make sure Nightmare Moon did not return. I am immensely thankful for this, since then Equestria would be under attack by her, and Tia probably wouldn't be able to re-banish us back here.

Nightmare Moon is once again trying to assume control. I grow weaker every second, and I can see my coat growing gradually darker. That is all for today, I guess.

Luna

     Nightmare stood up, and kicked the journal away from her. She thought of it as an uninteresting object, just an item that took up space here. She locked her gaze on the blue, green, and white marble of a planet in front of her, and gritted her teeth. She would succeed this time in breaking away from the moon, and she would assume control as rightful ruler of Equestria.

     Luna, realizing that Nightmare Moon's horn was glowing with dark magic, tried to counterattack her magic. Nightmare Moon's magic faulted for a minute, but eventually shot a dark, electrical beam towards the earth.

     "Noooo!!" Luna was terrified that the magic would hit Equestria, and somehow assumed control over body. Suddenly, as her eyes turned to normal, the beam bounced off what must have been the force field, and hit her in the chest.

     Once again, Celestia woke up suddenly from her dream. It wasn't a nightmare this time. She hadn't had a single one since the first day. This had been a pleasant dream.

     It had been the day she'd taught Luna how to raise the moon. The day she'd got her cutie mark. Luna had been overjoyed at this, and wouldn't calm down for an hour. Celestia had happy, joyful of those days when they were fillies. Their parents had watched over them until they got their cutie marks, and had let them have more freedom.

     Celestia sighed, and once again looked out towards the moon. As days and nights past, a slight imprint became darker on the moon. It was that of a female unicorn whose eye was closed. As she looked towards it, another shooting star shot past. The princess whispered, "Please let Luna be okay. She is stuck with that horrible creature, and might fall to it at any time.