She clearly does not want to perform live, period. Does not want the fame. So stay home, record music, release it, live happily. Don't put fans through this.
Is she stuck in a contractual obligation a la U2 and LiveNation? Who knows. But people forked out $114 (plus travel, accommodation, etc).
I got a refund from a Ryan Adams gig. Some clown yelled out "Play Summer of '69!", Ryan cracked the shits, stormed off stage and didn't come back. Only played half an hour haha.