I think satisfied is right. I'd start by telling her how you have some common interests. maybe tell her about some experiences and answer any of her questions. Make sure if your are going to pursue it to take it slow. Speaking as someone who was virgin, and very new to everything, when I first discovered the world of bdsm it can be extremely overwhelming at first. Ant it will probaly help her to know that there are others who are interested in the same things. Especially knowing that one of her good friends is one of those people. Good luck.