You've only seen her 5 times...that's not much to build on yet. Maybe you're putting too much pressure on yourself to open up right now. It takes time to build up the trust necessary to get to the hard work of therapy. Maybe there are things you can work on now to help build trust - can you work on just being present in the session? Noticing and maybe talking about the anxiety you feel about being there? Can you journal and then share parts of those entries? Start slowly and let trust build until you feel safe being vulnerable with her. It's great that you like your therapist, that's a good first step to getting to a point where you can trust her, but it's totally okay if that takes time.