I'd be more concerned (not in a bad way) of those pauses in between stuff you had to say. Don't always feel pressure to continue the conversation. Sometimes, just look at her as if you're expecting her to say something. Sure this goes against the 90/10 rule, but you shouldn't always be the one with the pressure on you to move the conversation along. It's normal to do this. Interpersonal communication is, by definition, transactional. Also, if you still feel weird doing this, this will help to desensitize you to social pressure, if nothing else. You should never be searching for cool things to say...let the convo flow like you're talking to a friend. if you have nothing to say, just sit back and don't say anything. If you have something you really want to say and get out, say it.
Hope this helps.
Oh, and the fact that she continued the convo in between the pauses could mean two things: she was being polite and felt the social pressure herself, or she was really into you and wanted to know more about you.