She beat it with guts(the skill that makes her survive with 1hp), as the skill made her hand hard as steel. I believe that's what was said in the novel
I'm pretty sure she did have head to head combat skill that time, but even then it was mostly useless because their strength status is literally 0 and there was also the risk of losing 50% of your health. There is also the possibility that she did try to punch then but failed miserably since she...
I think weapons that aren't meant to hurt people would include the likes of boxing gloves that are meant to reduce the pain as much as possible to make fighting more safe