We stood her up in the chair and she cut the cake like a big girl.

And then she licked the knife! I was shaking in my pants but everyone was right there waiting to jump in. We would have gotten her to the hospital, quick fast and in a hurry had she sliced of her tongue. Just kidding it was a little sharper than a butter knife.
side note: Jerry just came past as I was posting this picture and said, "She is licking the knife!" As in how could we let her lick the knife!
Ariel says, "It was her birthday!"