Ya can't learn how to play tennis by reading a book about it. Ya have to just get out there and start doing it. Her confidence will build with experience.
+1
Stage fright is actually one subtype of agoraphobia.
Folks with stage fright may have real, sometimes terrifying physical symptoms before or during performance (or public speaking) -- sweaty palms at best, heart palpitations and outright panic at worst. It can be mild but it can also be serious.
The treatment for phobias is centered around controlled gradual exposure to what you're in fear of.
I have it. It used to be bad, but now I am okay with it.
For me, successful gradual exposure meant getting into a band that worked a repetitive circuit of "animal" clubs (Moose, Eagles, Owls, Elks etc.) and playing in front of relatively small crowds who were only interested in visiting with their friends, and would have been there no matter who the band was that particular Saturday.
This worked. At first I was ALWAYS too nervous to play my best. Over time I proved to myself that I could be nervous without screwing up the song. And finally it just clicked with me that I could be relaxed in front of people and it was going to be all right.
Years later I found out more about stage fright and discovered that what I had been doing was in fact the right thing to do -- gradual exposure under controlled circumstances.
I find now that my stage fright is only a problem if I attempt to play while not thoroughly prepared.
Your friend, if her condition is really serious, might benefit from an award-winning book called "The Anxiety and Phobia Workbook" by Edmund J. Bourne. I highly recommend it for anyone with not only stage fright, but depression or anxiety as well.
Oh, and although "bourbon" was recommended -- I can say from a few experiences that's actually a really bad idea, even (and maybe especially) if it "works."
