Before all of that, we need to take a look into Kino's mind. The time when she didn't do anything and only stood at one spot.
At the time, an idea appeared in her mind. It was to level up as quickly as possible. Although her main purpose was to get to the camp as fast as possible, that was because she mainly worriedly about those three.
Now that they were gone, she can level up all she wanted. There was another reason, which was to make Tornado owed her a favor. She might need his help in the future.
He had overpowered skills and a broken weapon. Furthermore, his perks were all almost reaching the limit! He was similar to a robot while the enemy only had tanks, war jets, guns, etc! This robot was enough to turn the table within seconds!
