If you see her, don't stare!
She is very self conscious about her boo-boo. It's actually kinda funny since she is not even two years old. Still, she is timid when asked about it and eager to use it to get sympathy on her own terms. My KB is a natural at manipulation, I tell you what.
How did it happen? Playing outside, KB had a stick, Bubba decided to do a little dance and bumped KB, stick slashed face, crying ensued. I'm surprised you didn't hear it.