What Causes Dry, Red And Itchy Patches At The Site Of Dog Bite?

My 7yro daughter was bit by a neighbor s dog while passing there house on her scooter. The owner was there as well as my other daughter and their friend. She was bit on the back of her knee. Neighbor didnt do a thing. I didnt know much of what to do but clean it and consolemy child. Two little punctures wounds not to much blood. Washed it with soap and water, then alcohol, then bacitracin. Every time we thought about it she would doctor it. It s been two weeks and the bit marks have healed, but now there s these 2 inch dry ichy red patches of skin above and below the bit location. If I was to say, they look similar to eczema. She has never had and skin issues ever. Is it related to the bits?