Luna landed inside the hole in the ship a few seconds after her sister. After looking around for a moment to inspect the damage, she finally broke the silence. "Sister, are you sure that Sombra is in here?"
Celestia nodded. "Yes, Luna." She turned to the ponies gathered behind them. "Attention, Citizens of Equestria!" All of the ponies stopped their chattering about what was going to happen. "We must rid Sombra and his forces from our ship, lest they assemble and rise during our journey." The crowd began to cheer, charging headfirst into the darkness of the ship, equipped with only simple spears, pans, and occasionally a chair. As they slowly moved through each section of the ship, Celestia and Luna split forces and began to search individually.
After checking several thousand rooms, Luna turned around signaled for Pinkie's army to halt. "I think we deserve a break for now," she said weakly, "besides, we've checked nearly a third of the ship so far, and we haven't seen even the simplest sign of Sombra or any of his troops." As she said that, a large, dark, crack began to form on the ceiling over the Princess. It didn't take long for it to become several times bigger than Luna herself, though it never seemed to stop growing. At last, the ceiling gave way, and a large control panel tumbled down over the Princess.
Maud was the first to react. After several years of training alongside her sister, she had the ability to not only break rocks, but practically anything that had a high shatter point. Luna finally stopped talking and looked upwards as the grey mare glided overhead, crushing the panel into dust as it fell. Finally, she landed. Luna began clapping. "Wow... Maud, you... you saved me." Maud saluted back at Luna, and disappeared back into the crowd of astonished ponies.
~~~{}~~~
Celestia had finally finished checking the final room, and had met up with her sister in the main hold. Luna began to speak to her sister. "Sister, do we have Sombra in custody?" Celestia shook her head slowly. Several gasps were heard around the room. Luna glanced out the hold's window. Sombra must still be here... he's hiding somewhere, and he could return at any moment during our journey...
General Dash saw Luna leaning her head over the window, and promptly flew over. "What's wrong, Princess"
Luna sighed, and turned around to face the general. "Nothing, I'm just thinking to myself." She then turned back towards the window, and continued her thoughts. If only... if only we could've defeated him earlier. Why... why must we live through this? Why can't we simply use something to rid him forever? Why must the Elements be useless?
A large, white wing draped itself over Luna. "Don't worry, Luna. Everything will be all right. I know that you're worried that he may come back, and I know that the Elements still need bearers to this day, but I beg of you to trust me, dear sister, we will live through this, no matter how hard it may become. In the end, we will prevail." Luna looked up at her older sister, her smile momentarily bringing the younger princess back to her childhood. She saw herself, not past even ten, playing around with her sister in the mud, as her mother oversaw their play.
A large tear ran down Luna's cheek. She turned back to Celestia, and shakily whispered, "I-I just miss the past, sister. I miss the times when we could simply forget the world, enjoy ourselves. I miss our parents. I... I miss... I miss everything" It was very rare for Celestia to see Luna cry, and it certainly startled her to feel her sister dig her face into her mane and begin sobbing uncontrollably.
Celestia nuzzled her sister. "It's ok, little sister. Everything's gonna be all right. There's no need to cry..." Luna began to calm down, though she still was softly crying in Celestia's soft fur. Celestia looked back up from her sister, who was crying herself to sleep. "Attention, please! Our duties here are done, and we give you the all-clear. We shall repair the break in the ship, and we will then take off."
She looked back to her sister, who was already sleeping, though occasionally sniffling. She gave Luna a motherly kiss on the cheek, making her younger sister calm down a little, even smiling a bit. Celestia smiled back down at her. It had been years since she had seen Luna smile, and she was simply glad that she was finally peaceful.