Need help with jealous GF

Ok my GF got angry with me because I met a friend and she got jealous. She didn't talk to me for a day and when I called on the second day, she accused me of trying to make her jealous, which I would never do. So I was a little upset (normal reaction, I wasn't going crazy or anything) because we weren't talking and she was closing me off and also because she thought I could do something like that. So when I eventually meet her she tells me that she doesn't trust me and she was freaking out because she was worried that I cared about her more than she did about me because she said 'if I loved you I would trust you'. I know she is jealous because of issues she has from before we met. She also said I shouldn't have been upset. Why would she say that? I think she can't cope with a normal relationship and also feels guilty because she knows that her actions sometimes disturb the relationship. Any ideas about what I can do?

she can use a little counseilling from an expert and a little reassurance from you can solve your problem