Well, of course. Why do you think they call her "knifegirl"? She has replaced her right hand with a chainsaw (Important Lesson #1: Never watch "Evil Dead 2" while tripping) and uses it to cut up everything from prime rib to small children.
Additionally, she has had all her teeth removed and replaced with razor blades (Important Lesson #2: If you kiss knifegirl, do not slip her the tongue).
Finally, she has had her elbows and knees filed to points, allowing her to eviscerate people on subways, soccer fields, and shopping malls with very little effort (Important Lesson #3: Never visit subways, soccer fields, or shopping malls).
This was a sharp nodeshell.