First off take her to the vet to make sure there isn't anything medically wrong with her. She could have a thyroid problem. That is why Keegan is heavy. If Tikeya's thyroid is out of whack no amount of reducing food or exercise will help her lose weight. Then try switching to a lower calorie food, adding some canned pumpkin or green beans to her food. If you add pumpkin, you SUBSTITUTE the pumpkin, like half cup for half cup.