Wrap a towel around her snugly and lay her down sideways. Then use a magnifying glass to look into her ears. If you see what looks like black pepper, (little black specks, possibly red specks as well) it's mites. You can treat using an eyedropper with vegetable oil in it, a few drops in the ears will eventually suffocate them. Visually inspect her for lice/mites elsewhere on her, particularly her vent area. Use sevin dust to treat her if you see any and repeat dusting her in 10 days to kill any that have hatched since the first dusting. This will break their lifecycle.