I'm 19 and I've been seeing a psychologist for about 7 months. I was diagnosed with GAD. Lately the sessions are getting pretty intense. I'm pretty shy as it is, so talking face to face about my feelings is something that isn't my forte. So last week my therapist told me that I could email her anytime I need to and about anything. So I did, and we discussed it in session. I went again yesterday and after the session she said the same thing, if you need to tell me anything always know you can email me. I get that she wants me to email her but i can't do it

I feel like such a child for not being able to talk face to face and I'm pretty sure she's only saying it as a last resort, she's probably like whats wrong with her she can't talk to me about feelings.
What should I do? I have an appointment next week and I'm not sure if I should email her about some stuff or just wait.