You need to escalate the relationship, excite her mind and tease her. You don't want to be too pushy or too confident. You also shouldn't fall in the other extreme, of becoming too quiet and just listening to her. Make sure you remember what she says, so you can latch onto any piece of important information. You need to get into her moment, into her world. You can be goofy and fun and be an approachable person. Women will tend to be attracted by these type of men.