Emmy has little scars on her cheeks. Nobody at horizon house could tell us what caused them, other than to say they might be tribal markings (like Sister Tyrhaz has in her eyebrows). We've always wondered, because Emmy's scars do appear to be intentional.
The Dec 2009 issue of Nat Geo has an article on page 94 about the Hadza tribe in East Aftrica.
One of the photos has faces of children with scars cut into their cheeks. The explanation is it conditions the children not to cry because the salt from tears will sting the small cuts in their cheeks.