My Red Eared Slider cannot eat for more than a month. She really wants to eat but just cannot! SHe tried to eat the shrimp and fruit in the water but it seemed that she could not hold the food inside her mouth. Whenever she tries to eat, the food falls. It think there is something wrong with her mouth or throat. I took her to a vet for x-ray already but unfortunately, the vet could not find any problems. Can anyone help me?