Maybe what you need is some practice. Need to read some obvious body language and facial expressions. While analyzing what she might be trying to say.

If you don't wanna bother with that, then stick to scripts. just ask some basic questions. Ask your self, what is it that your trying to get out of the conversation and just ask away. Are you trying to get some? Are you looking for steady realtionship? Do you just wanna know her better? what is your goal?

Hope it's enough.. GL