Go-go-gadget-gun!

I think of it as a Swiss Army Knife. It's a knife, a screwdriver, a bottle opener, a can opener, a wire stripper, a corkscrew, scissors, a toothpick and a nail file, but it's still called a "knife". I guess it just depends on which mode she uses more. It might be a gun with build in blade, or a sword with a built in gun. Or maybe they have some special name for it in the FFXIII world (which is probably the case).