I agree with the posts above.
Her being jealous is not a sign of hate, it's a sign of worry and insecurity.
It's likely that if she meets you, she will realise that you're another human being just like her, rather than whatever image she has in her head, and it will help her feel more secure about the relationship.
I wouldn't worry too much about her hating you. I think, providing the person is pretty stable (i.e. not crazy paranoid), it's difficult to hate someone that cares for the person they love and makes them happy.
Just be calm, be yourself and you'll be fine