I'm not convinced, having seen her act I don't think she'd make a great climber: Very flexible but that level of flexibility is going to mean awful joint stability and probably fairly limited muscle tone. High feet are useless if you don't have the power to get your weight on them.
In reply to silo: That guy who does the amazing BMX tricks (forget his name) - great balance and willing to do very necky stunts.
Likewise I reckon Evel Knievel could have easily mastered the head games. He knew a lot of his stunts would fail, but did them anyway. Not sure if this would be a good approach for climbing, but I bet he would have pushed himself to his limits.