You might try a better quality food, if she gets wet food, try Taste of the Wild, Wellness Stews, Natural Balance makes a good wet food+. Also don't hand feed her. If you have taken her to the vet and she is perfectly healthy and her teeth are good I would give her a little case of tough love. You set the bowl down, she does not eat it in say 15 minutes you pick it up and she gets nothing to eat until the next feeding time. Make her earn her meals, so if you want to hand feed her, she has to earn it, making her sit, down stay, roll over, hand touches, etc all for her dinner or breakfast.