None of them expected that the small gun in my hand could produce that kind of destruction. If anything, it should be impossible. But that's the wonder of Dannae's abilities.
As long as the tool used doesn't break, she can infinitely amplify it. After using it a lot, the girl had already grasped the limits of every weapon she could amplify. Of course, it's also not so broken that she could create a Planet Annihilator easily.
The stronger the output, the harder it is for her to amplify it. That gun wasn't shot for months. Hence the devastating result.
With how big the hole Dannae's gun opened up to the Space Vessel, I easily slipped inside it amidst the chaos and confusion. It should be their hangar considering there's quite a collection of identical small Space Vessels inside but even those weren't spared from the destruction brought by the gun.