There is a medication called a beta blocker, that can greatly help a performer who suffers from anxiety before a stressful performance, like a jury. Have her ask her physician about them.
Most of the psychological tricks are like Le Maz (sp?). After a minute, they are tossed out the winder and the screaming commences.
I imagine the audience naked. I try and have fun with them. Seriousness belongs in chemistry.