I know how to use it when I help with cooking.

[So chopping and skinning animals for the kitchen, essentially. Aside from that...]

I tried to learn in the Training Center, too, but I just stuck with the slingshot in the end.

[There was no guarantee then that she would find a knife, not with the Careers most likely taking over the Cornucopia, but she could always make a sling shot from scratch. It had seemed the reasonable choice in the end.]