Women's have much more stuff to do in their lives. Like taking care of children, many of them are busy with the jobs and at now the jobs have become so embarrasing that you can't afford to spend time for other things and it becomes difficult for a women to know about the bitcoins.
You missed few things like Watching television
Using husband's credit card for shopping
then why would they get involved in bitcoin if everything they want they are having it. So generally they are used to go away with fiat money and credit cards so they dont show their participation in using bitcoin.
