to motivate a woman to use bitcoin i think it's very difficult.
logically, you can motivate by telling that the bitcoin can buy beauty

I have a cool idea. send her an email every day with a free bitcoin earning tip. send her a earning bitcoin website with earning method every day. and send her bitcoin fresh price. girls love money and love to earn money, when she know she can earn bitcoin through her mobile or laptop and one bitcoin is equal to 400$ she will definitly impressed with bitcoin.