it made me think of telling my girlfriend about what is bitcoin , i will tell you after what was he reaction :p
It is either she will accept bitcoin or will be very difficult for her to understand it, But it is good if she take it more seriously because a good relation needs understanding and no secrets involve.
And it totally depends on us that how we introduce them to bitcoins as mouth publicity is the biggest publicity, if you introduce them positively they would surely be get attracted to know more about bitcoins, the technical things and where it is generally used for, and once they are aware that they can use bitcoins for shopping, they would be surely get motivated to use bitcoins.
Yes says to the girl that the bitcoin they can shop online. They must be very interested in it and try to use bitcoin. The way it must have worked because I've tried it with my sister