So Fraggles has been scratching both ears and shaking her head a lot. Every few minutes she very carefully uses her back feet to slowly dig in both ears. She washes her foot for a long time after a scratching session. She has also been shaking her head quite a bit. But the ears are clean with no dirt,sores or smell. They look totally normal. She is completely indoors and is never exposed to any other animals. But the ear itching started when I changed her hay from alfalfa to orchard grass. Its a good quality hay from a feed store and not in those pet store bags. Its clean,good smelling and seems to be pretty dust free. Any idea's?