I have a little experience on scale rot as i have succesfully treated three snakes in the past. You want to put her on paper towels ASAP and put Betadine on the affected area once a day. She will go into shed, at this point do NOT mist the cage, get some java moss and raise the humidity that way. The possible scale rot should go away when she sheds. Best of luck and feel free to pm me with any questions.