Neither of my three dogs have ever had something like that - I'm not a professional but try to look around pet stores for creams, to grow her fur back. Wash the bald spot with soap and water, and praise her, give her treats to occupy her - and if it's bothering her to where she won't stop biting it, you'd probably have to put a elizabethan collar on her, so it prevents the biting.

Hope it works! Prayers to your Honeygirl..