When you were, as children, wanting to pick up didjeridu, want to play didjeridu, when we were children, our grandparents, or aunts and uncles had always told us off, and said, "You can't play that, it's not for you. You're a female. Didjeridus are only to be played by male members of the family." And we've always been told that, for as far as I can remember.
Superstitions were added, too, saying, "you know you can't play didjeridu as a female. You'll become pregnant," and things like that. I know that there's probably another more important reason why. It's not to do with who you are or where you come from, what kind of background you come from, It's all females.
Women have their own business, yeah, women. There's a lot of activities around females that males don't even get included in.