Ooops I'm pregnant

Celestia looked at her younger sister with joy on her face. The executive board of Equestria approved the law change. Luna can stay. No more banishment. No more centuries apart. The sisters remained together one day more. Luna knew the answer to her question just by her sister's expression. The princesses ran to each other like children, jumping up and down in excitement. Then, Luna started to cry. It was a mix of both happy and sad tears. Because Luna started to cry, Celestia felt the need to let out her emotions as well. So, when Flash Sentry and Rarity walked in, with very serious expressions on their faces, they were met with two blubbering princesses. It was quite the spectacle to see, as Luna and Celestia seldom let their emotions shine through. Rarity, being Rarity, immediately jumped to conclusions.

"Your highnesses, I am truly sorry." she said bowing.

The royals looked at Rarity, and started to laugh. Then they were laughing so hard, Celestia fell onto the floor. Luna had to steady herself on Celestia's arched back.

"Rarity," began Luna through laughs, "It's OK! I'M STAYING!" she shouted loudly.

Rarity looked at the rulers of Equestria and decided that they had lost their minds. Whatever, she thought. There were more pressing matters.

"Your highnesses, we um...well...I" said Rarity as she slowly lost composure.

"What Rarity um..." started Flash, feeling sick. He felt like someone was watching him. This was not good. Flash had a sense, that allowed him to sense a presence. Hence, the guarding cuite mark. He looked around, aware that all eyes were on him. The princesses laughs had stopped. Flash moved towards the door. He noticed it was open, just about five centimetres. As he reached out to open the door handle, Twilight came into the room. She didn't look quite sane.

"They want to get married." she said, her voice more high-pitched than usual.

Celestia and Luna were very confused. This made no sense. As the princesses were distracted trying to figure out what was going on, Twilight started to conjure a dark-magic spell. Flash was the only one who noticed this, and due to a lack of horn, could do nothing about it except yell. Because of Twilight's talent with magic, she was very quick in completing her spell.

So, as Flash started to yell a warning at the princesses and Rarity, Twilight had already shot the spell. The mass of dark magic was hurdling towards Rarity, who had just looked up from the ground, which she had been staring at so intensely. Rarity started to scream.

***

It was dark all around her and there was no light. She couldn't tell if the spell had even started to affect her, or if she had even left the palace. A voice started to whisper familiar words and phrases to her.

"NO!" she screamed. "NO!!!!"

***

Luna, Celestia and Flash looked around the palace meeting room. Rarity was gone.

"RARITY!" yelled Flash, anger bubbling inside him. "Where is she Twilight!"

Luna suddenly collapsed, as though she was in pain.

"Luna!?"said Celestia, who was sitting at her sister's side.

"Twilight!" yelled Luna. "Twilight...Sparkle!" Luna yelled though her groans and whines.

Before anyone noticed, Twilight sent another dark spell, this time at Luna.

As it hit her, Luna screamed. "Not again! Twilight, I will get you for this!"

Luna was gone.

Twilight giggled a creepy, slightly deranged giggle. " They're gone now, but don't you worry, they'll be back."

And with that, Twilight disappeared in a puff of black smoke.

Flash Century looked at Princess Celestia. She was sitting, where Luna had been lying only a moment ago. Celestia's face was streaked with tears, and she was muttering sentences under her shaky breath.

Flash was now very, very scared. "Your highness?" he asked feeling rather sick.

"It's all my fault!" she wailed. "There never coming back!"

"But...Twilight said-" began Flash.

"No. Twilight lied. They'll come back. Just as a different being all together!"

"Flash?" she said, this time in a very serious tone.

"Do you remember Nightmare Moon? Or what about Nightmare Rarity?" said Celestia as she wiped away her tears.