I see thanks for the reply.
Yes, I am feeding her grain-free kibble (Nature's Variety Instinct Duck Meal and Turkey Meal).
Actually, I didn't realized there was a problem with her before (Leather ear) because I didn't notice any problem on her skin and ear. It's just that I thought her coat grows a bit slower that's why her nose and ears don't have much hair.
What can you say about the picture of the back of her ears? Is it really Leather/winter Ear even without black slimy stuff in her ears?
What should I do? Now I am concerned