turtle's skin peeling?
ok so today i noticed that my turtles skin is peeling on her arm. its the skin on the top of her right foot(claw?) and me and my parents havent noticed it since today. i dont know what happend, but im thinking she hurt herself on this kinda big rock we got from my backyard a wile ago. but the skins peeling off and its still attached by a piece of skin, and underneath its like pinkish(meaty? my dad says). also she seemed like she was going to bite the piece of skin off, i dont know if thats a good thing but my mom said its probably better for her to bite it off, than for my mom to do something to get it off because she would hurt her. she is a..well im not sure what kind of turtle she is but im pretty sure shes a red-eared slider, and she lives in a little tank full of tap water. all thats in her tank is that bigish rock, and some little rocks for the bottom. please help i dont know whats wrong. should i take her to the vet?