Get the top markets in the world to like BTC and accept it, And get some discounts on it in stores while shopping, That would be a great way to encourage women to use BTC IMO.
Bitcoins aren't accepted by the popular websites and even there aren't much discounts or cashback when users pay with bitcoins and only way to get women to use bitcoins would be gifting them a debit card like xapo debit card or other bitcoin related debit cards.