hello!..I'm new on this forum..so i'm sorry if i'm posting wrong and if i'm killing the english grammar.

I recent bought a female ball python and I have seen a brown/rusty scale on her belly. Someone toled me that is healing...i'm not so sure.

anyway...i reduced the humidity...i increased the temperature...the tank is clean...and i keep the snake on paper towels....what can i do to cure her complete?

here is the scale


and here is the big girl