theater: what is the cause of thunder?

saw this play last week on Thursday. thought it was overall pretty good but I wasn't the world's biggest fan of the ending which is too bad since it made me less of a fan of the entire thing. it's about a soap opera star and her screen life and home life and about how crazy, like literally insane, she is/becomes. the two actresses in it were very talented which also made the play more enjoyable of course.