The problem I have with your nurses story is that Tibet has been ruled by China for years, and the Buddhist monks there have been suppressed and even imprisoned for most of their lifetimes.
Any misbehavior of the type she describes would be quickly reported to and punished by the authorities. The Chinese communists would make a big point of publicizing it too, to weaken and discredit the Buddhists. I have seen quite a few "documentaries" produced by the communists alleging just thie kind of thing you describe, BEFORE the modernizing Chinese came.
As for superstitions in Tibet "to this very day", I have no doubt it's true, and I can say the very same thing about the United States of America, where more people that beleive in astrology than in any other system of belief, including Christianity.
You can have a problem with it; while I don't appreciate being called a liar Mr. Valentine - the story is true and I stand by it.