Sienna nodded to Takeyu. It had been a good long while since she'd handled any type of firearm, but the little pistol-like tool felt familiar enough. Raising the barrel to aim at a surface on the ship near the gash in the hull, she let her breath out and squeezed the trigger. Involuntarily she flinched as the trigger clicked, expecting a recoil, but the gun didn't so much as shake. She lowered it slightly to inspect it, intending to look for a safety catch she'd missed or any other sign that it had misfired, but as she did so she felt resistance, like it was tied to something she couldn't see. Perplexed, she tugged against the invisible force, looking in the direction she'd fired. She was a bit surprised to see a thin fiber of thread extending out from the muzzle, almost rendered invisible by the blowing dust and haze. She looked up the ramp of dust and soil that was quickly eroding under the increasing wind, unable to see where it had attached. Giving it a couple more yanks, testing its hold, she finally decided that it had functioned properly, and didn't have the luxury of doing much more than trusting it to hold her weight.
With a grunt, she took a step up the ramp of earth, nervously pulling herself up with the gun and thread. She didn't see how such a thin strand of material could work as a lifeline, but she didn't have another option. She reached forward, groping about blindly for the impossible-to-see thread, finally getting a grip on it with her free hand, and proceeded to climb up the unstable ramp step by deliberate step, pulling it taut with every bit of progress.
About halfway up the ramp gave way and her feet slipped from beneath her. Her white-knuckle grip on the thread was all that saved her from going face first into the dirt and tumbling back down again. With her breath still caught in her throat, she hoisted herself back up and continued to climb, finally making it to the top. When she stood before the gash in the hull, she caught sight of the actual dust storm itself, a solid wall of blown-up earth rampaging towards them at alarming speed. Her eyes went wide.
Instinctively she realized what the thumb-trigger on the gun was for, and with it pointed at the ground, she depressed it. As she suspected, it cut the thread free, and she shoved the tool back into its holster. She looked down at the gash in the hull, then back at the dust storm, then at Natsumi and Takeyu who were already crawling inside. The dark aperture didn't look particularly inviting, but then again, neither did that storm, and she knew for certain that getting caught inside of it in the high gravity and thick atmosphere would end badly for her.
After a brief hesitation, she crouched down and slithered into the gash, away from the approaching storm.