Was it cut off above the knee or below the knee? Prosthetics might be alright if its below the knee but she would still be severely messed up no matter what if it was above the knee.
Perhaps she can get a nice amount of money from six flags and get some high tech prosthetics that could possibly let her run again. I'm not too sure how far along prosthetics are these days. I kind of wonder if they can do something like that.