This is a crucial step in taking a conversation forward and impressing her. Make sure you think for a couple of seconds before shooting a question, for your questions will set the tone of the conversation more than her answers. Even if you are nervous, do not make the mistake of asking the same question over and over again. If you listen carefully to what she talks about, you will be able to pick hints for further questions and topics of discussion. Also, make sure you ask the questions in perfect context and in time. Do not ask about something she said much earlier, as it will show that you were not listening.