I met one of her coaches from the Olympic Center one time. He told me that she was one person he could never break in training. He said she would rather die than quit. You would literally have to kill her to get her to leave the mat before he said the work out was over.  He was a strength and conditioning coach for the Olympic Judo team and had trained dozens of elite level athletes over the years. He said there have only been three people he could not break and she was one of them.