Can someone help me identify what's wrong with my ball python? Looks like mouth sore

[Bluebonnet Herp]

OH and regarding the weights, I'm SO sorry to those of you who were worried about her. I haven't checked this page in a while since her issue was gone.

My old vet was a total quack. I'm not even sure what unit of measurement he could've possibly been using.

I need to get a scale myself pretty damn bad. 400 seemed a little low to me too. I just took her to a herp vet the other day. She's actually 1127 grams right now. She's a pretty big girl, almost 3 feet, pretty healthy size.

That sounds about right.