You've only known her for a month and you both act like "gf/bf" because of webcam chats? I'm sorry, but that's too rushed and a bit hard to pull off. It's difficult to have a real relationship with someone without physical contact. She might be scared but it does seem that you both, and possibly just you, got attatched far too soon. Get to know eachother more, meet a few times and then you can start a relationship if you feel that you want to. It just seems far too rushed and not realistic.
In my honest opinion, I don't see anything coming from this by the way that she's acting and through reasons mentioned above.