The Tina Fey facial scar mystery

Heather and I were watching Iron Chef America and Tina Fey, of Saturday Night Live fame was one of the judges. I'm not a huge fan of SNL so I'm not really familiar with her, but I did notice the scar on Ms Fey's left side of her face. I mentioned it and jumped on Google for a quick lookup as to its origin.
In a Nov. 25, 2001 NY Times article: ...Her other trademark is a scar that runs along the left side of her face, although she won't discuss it. "It's a childhood injury that was kind of grim," she said. "And it kind of bums my parents out for me to talk about it."
I had no idea the mystery that is the Tina Fey Scar!There's simply no answer to the question anywhere on the Internet. I guess there are still some celebrity secrets out there and I find it interesting when I stumble on something that has been of great interest to others out there; kind of like the Tom Cruise middle tooth excitement.