[b]Dazednconfused[/b] offered you some good advice about opening the channels of communication with your girlfriend. Talking and learning more about her feelings can only help you and the relationship. However, if she is looking for some freedom, there’s not a lot you can do about that. You are both very young to be living together and working together. For some people that works, but for most people, and perhaps your girlfriend is one of them, this is a time of life to figure out what you want, and if you’re living and working with someone, it’s hard to figure that out.
You may have to let her go, and know you did your best, but that this relationship may not be right for her at this time in her life.
I hope that helps. 🙂