My girlfriend I just started dating is so shy and quiet how do I get her to be more talkative and unshy?

We have been going out for about 4 weeks now and see each other about once a week and talk everyday but she is just so shy what can I do to get her to talk more and make more eye contact and how do I no if she wants to have sex or not

My girlfriend I just started dating is so shy and quiet how do I get her to be more talkative and unshy?
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