Will the fur grow back?

You are a terrific person for taking care of this unfortunate cat. I hope she now has a forever home with you. Her fur should grow back, but it will take some time. You might want to ask your vet about omega caps to give her. I was giving the caps to my cat for his itching (allergies, too...) but it was difficult snipping them to mix into his food. I found the same in liquid form. It is Omega-Caps ES Liquid which I purchase online at www.healthypets.com An 8 fl. oz bottle is $11.99. Your vet may sell it, too, since it is verterinarian approved. I give about 1/2 teaspoon mixed in with food....and finger it into my cat's mouth so I make sure he gets it. It makes a big difference for the skin and fur in a positive way. Plus, Omega is good for the heart, too. Hope this helps.