Ask the relationship crew (they give advice on friendships, relationships, etc.):
If I were you, I would go up to her and say something along the lines of "Hey, you seem like an interesting person and someone that I would like to get to know better. What are you passionate about?". This will initiate a conversation with her. Keep your cool, act yourself, make sure the tone in your voice stays the same as if you were talking to one of your friends and most importantly, be confident in yourself and don't expect an outcome in the conversation.