just tell to her that with bitcoin you can buy clothing 
I think it is old but gold method I sometimes managed to make my female friends interesting with bitcoin. I just say that I bought this shirt or clothing with bitcoin on the internet. and I have got her interested by saying that "what is bitcoin?"tested by me
Yes it can make a woman interested in bitcoin because they can buy something. If they are interested they would try to use bitcoin. To motivate women to use bitcoin my opinion is different because women have their own interest.