in my openion the better way to explain about the btc to woman and motivate is first show them advantages of bitcoins and profit of bitcoins .
and explain them with the simple example of practical money .
I guess it is better if you are going to show them and make them experience to use your profits with bitcoin and let them to buy anything that they want. And if they are still not interested into it, then leave them alone. Women just want to have instant money and doesn't really want to work hard and get it with their efforts.
Your opinion maybe true to some woman, theyre really into buying stuffs clothes or shoes, etc. even though they already have a lot of them at home and they will do anything to get money really fast to buy them and letting buying something with your bitcoin might draw her attention to it.
However, there are some woman they dont keen on shopping and they just want to earn money, so to those woman, you dont need to give them anything that is bought with bitcoin, just show them about it, thats it.