COuld be what she's eating. When I first got both of my girls, they itched and flaked terribly
I switched them to a food with NO grains, soy, corn, poultry, wheat, etc. Those are some of the common allergens. Dick Van Patten's Natural Balance is great, and for a puppy it's good because it's pretty easy for them to chew, since it's a flat circle-shape
I hope your little one feels better soon!