Offtopic - The person above me has an awesome avatar =D
Anyway. It seems likely she's lying, to be honest. But think about your personal experiences with your friend before. Is she typically one to lie, stretch the truth, or love attention? Or has she generally been honest with you before? I don't care what she says, if she was truly raped, some "online camp counselor" is not the answer. Tell your parents. Then tell her you told them. If she was lying, she'll realize the mess she's gotten herself into right away. If she wasn't, she may be angry with you at first, but in the long run, she needs serious help.