My red eared slider wont eat her live fish?

You should not be feeding frozen fish to red eared sliders. The frozen fish are deficient in thiamine and can cause problems in the turtle if they eat a lot of frozen fish. If you are going to feed fish make sure they are live fish; the turtle will eat them when they can catch them. I have four red eared sliders and give live fish on occasion. They eat them after a few days usually. They like to play with them for a while before eating them. I also feed them turtle sticks, dried shrimp, and dried krill. I also feed them chicken so they get their protein. Make sure it is cooked chicken (Walmart and Kroger both sell chicken strips that are fully cooked that you need to heat up before eating). You do not have to heat the chicken before giving it to them. I would recommend giving chicken just before changing the water in the tank because they make a mess with chicken.