A/N: I'm tired of fighting with this chapter, so I'm just going to release it.
Peach was walking down a hallway in her castle, when she noticed the door to Celiko's bedroom was slightly ajar. When she came over and peeked inside, she saw someone familiar throwing things into a suitcase on the bed.
"...Celiko? Celiko, it is you! Where have you been?!" The leader of the Mushroom Kingdom ran inside the room to greet her cousin, but immediately screamed when she saw who else was inside with her.
"Ugh, did she have to scream like that? I didn't even do anything," Bowser grumbled, and crossed his arms in disgust.
Celiko sat down the pile of dresses she was holding on the bed, then motioned for Peach to calm down. "Peach, it's okay. Please, don't cause a commotion. I can explain..."
"What's he doing here? Did he kidnap you? Is he making you pack your things?" Peach then took a quick glance over Celiko, and noticed several things. She seemed to be a lot more cheery, and was almost glowing. Her hair was usually just tied back with little care, but today it was gathered in a bunch over her shoulder, curled and interwoven with small white ribbons that trailed up to a beautiful silver tiara atop her forehead. Peach never saw her wear jewelry before, especially regalia, so to see her wearing a crown studded with seven colorful gemstones as well as a sparkling diamond ring was shocking.
"Peach... I'm moving out of the castle," Celiko explained. "Bowser is here to help carry my things for me. He didn't come to kidnap anyone, and isn't going to cause any trouble."
"What do you mean you're moving out?" Peach looked at her in confusion. "Celiko, where have you been all this time? No one has seen you in at least a month!"
"I was gone for two months, Peach," Celiko corrected, before sitting down on the bed and sighing. "But more importantly, why does it matter? No one really cared what I did before, why do you care what I do now? The truth of the matter is that I am moving out because I have a family to take care of now." She smiled at Bowser and took his hand, then looked back to Peach and patted her stomach. "A month ago we married and became husband and wife, and we're already expecting the next member of the family. Once I finish packing, we'll leave you in peace and you won't be bothered by us again."
Peach recoiled in horror. "Married?! Oh My Stars, what has gotten into you? He's an ugly monster! Him and those things he calls kids, how could you love something like-"
Celiko stood up and slapped Peach across the face with everything she had, then collapsed sobbing into Bowser's chest. He let out an angry roar that caused Peach to run frightened from the room, then threw a chair against the door, slamming it shut so no one else would disturb them.
"Salty bitch!" Bowser snapped, then cradled Celiko. "Don't listen to her, she's just jealous that you've got a husband who takes care of you and isn't afraid of commitment like that useless mustached oaf of hers."
As Bowser rubbed her back, Celiko's shaking slowly subsided. "...I wanna go home."
"Alright. Did you get everything you need?"
"...Wendy's letters and the mementos from my parents?"
"The first things we packed."
"Then let's just go."
"You took the time to grab those dresses, don't you want them too? You'll look pretty..." Bowser curled a finger in her hair, then straightened her tiara, eliciting a smile. It was her wedding gift from the kids, with the different stones matching their shells. "Alright. Now let's get back to our little goofballs before we find out they've set the kitchen on fire again."
A/N: I hate to say it, but it's going to get sad after this chapter... but I promise it will get better! I don't like tragedies very much.
Anyone interested in what Celiko's tiara looks like, look up Queen Victoria's sapphire tiara. Celiko's version is a little more reserved, with all but the points and the main stones in solid silver instead of diamonds. The main stones are then replaced with seven stones representing the kids' shells. I picked that instead of a big crown because she's a little more humble.