Children’s python has small risen scab?

[Daleschildrens]

Hey so my children’s python dumpling had a small mark/risen are pop up about 3 weeks ago. I took it to the experienced reptile guys where I got her and told me to not worry about it and to just keep an eye on it.
Mouth Rot was ruled out but I’m just wanting another opinion if anyone could lend it. Obviously really hard to get a picture of it as she is still quite young.
Thanks