Glenna,
Thanks for buying the book from me 
Most turtles lose their appetite during the winter months. It often takes something delicious (to a turtle) to spark their appetite. Since you have kept other reptiles you know about pinky mice. You can try that to get it eating again. My ornates love corn on the cob and will often go back to eating once they eat anything.
What is the weight of your turtle and its straight line measurement? Maybe it can be hibernated for a short time if it has a good weight. The book will describe how to do a short hibernation in a cool place or dorm fridge.
Tess


