Hello there, I have a Kenyan sand boa, [first time owner] and after she got out of shed, I noticed what looked like scales missing? I have orange sand so at first I thought it was just stuck shed but it isn't. it's closer to her skin than scales and has the look of past scales to them. She has it on her underbelly and on her side, I'm not sure what might have caused this, and if this had happened to someone else, what happened? Is there anything I can do to prevent it? There isn't anything sharp in her enclosure and the temperatures are always constant, she is kept in a 20gal tank. Any ideas?