Why would she forbid?
In the trivia it said she forbids her father from watching this movie. Would her father really want to watch it?
shareThis is rather silly since that would be clearly unenforceable. How can you "forbid" any adult - least of all your own father - to see the film?
Perhaps she is afraid that her father might follow the example of those old men in the film and try to seek out one of those private clubs.