I just got a box turtle as a gift. She has been doing fine until yesterday i noticed she didn't come out to eat. So last night i got her out of her little cave and was looking her over and her underside felt a little soft. I was brushing away the dirt and i saw some blood. She ate the food i gave her before she went back under her cave. This morning i went out to see her and i got her out from under her cave and now i've noticed she isn't using her back left leg. Please help don't know what to do. I feel so bad that she injured.