Thanks I'll take a look at it. The funny thing is her older sister is the opposite - she has nerves of steel. Her older sister has done back up pitching, but she has too slight of a build to be a regular pitcher. She doesn't get rattled. If she throws 3 balls, she can just shake it off, refocus and then proceed to strike the girl out. She is also much more reserved and the opposite emotionally - I mean you can't sometimes figure what the heck she is feeling.
The younger the opposite - they are both good players - the older just better built and better for motion - about the quickest short stop. But the younger one has the power to be a pitcher and the skill. But her emotions get in the way.
Even aside from the usefulness of the mental skill - I find it fasinating.