Looks like she is. Are you going to release her so she can lay her eggs? Preferably where you found her. Turtles have home ranges and it is best to return them to it as they know where to find food and water sources. She'll be fine against the raccoons, and as for her eggs - nature has to take it's course. If all nests and hatchings made it there would be serious population problems.
If you would really like to have a pet turtle you should consider adopting one. Pet turtles can't be released and often people get tired of caring for them, so you'd be doing a turtle a big favor by giving it a home.