Quote Originally Posted by loonunit View Post
Is it possible that this is just a bit of paradox coloring popping through? ... I wish it wasn't right by the mouth. I second the swabbing+culture suggestion.

If it weren't for the mouth issue, I'd say not to worry about the feeding/weight problems. Your snake is small for its age, but it's got a lot of company in that weight/age bracket.
I have her sister, too (both from the same clutch), and the sister is almost double her size and a very aggressive eater.