When writing, I was thinking of the Morgul blades, and how the Witch King pierced Frodo. Only I tempered it because Tasa's an old-blood Noldo so she would heal faster... right? Right???
*crosses fingers that an edit isn't needed* And the wound wouldn't be as awful because it's just a doofus orc inflicting it, not a crazy old ghost of a super-powerful king. It will still scar, since you just can't be stabbed by an evil spirit with no permanent damage.