User blog comment:Miskos3/Fairy Tail Chapter 488: The Two of Us, Always, Review/@comment-1359322-20160606134422/@comment-7418318-20160606135154

And he didn't even make her use the knife properly.

With Brandish's magic, she can shrink the brain, heart or other vital organs to a size at which they can't support the body, or enlarge them to a degree that they destroy the body around it like Misk said.

And with the knife he could have made her aim for the heart, head or other vital spots, instead of a stab in the gut...