To motivate women to use something in times we are living you don't need anything different from that you are using to motivate men. Yes, of course you do need something different to motivate some women but motivating that kind of women is a waste of time IMO.
Yes it is very difficult to motivate women but it does not hurt us introduce bitcoin to women. The most difficult thing is to make women interested in bitcoin. But if we could tell bitcoin to women and he was interested would be very easy for him to use bitcoin. Enough to tell me to women about bitcoin and let them choose to use or not.