Oh you must have added the pics while I was relying earlier, lol. How often are you giving baths? Too frequent dust baths can lead to dry skin. If it's getting dry in the house (like turning on heating because of winter) you may need to offer the dust less frequently. The bald area just looks like a fur slip, it's a defence if they get grabbed or something scares them.Is her skin red and scaly? no, her skin looks normal
how do i prevent dry skin?
I give 30 grams of pellets and a large straw ball daily