It doesn't look like just a piece of shed to me. Also the coloration below the eye, and down past her lip looks off, almost like a bruise. I would like to see what others have to say as well as I'm sure they will be able to help more than I can.
I wonder if it got bumped during shipping. I would email Ed or Briana with a picture from above and ask them what they think. The Kammer's are excellent breeders and will be more than willing to help. I was actually just emailing Briana a minute ago about a few on my little ones so I'm sure they will get back to you shortly with some help and advise.