Sounds like my relationship in the early days. If you like her I would stick it out a bit longer. When we first met my wife had a very busy life with trying to start her career and a large circle of friends from Uni. I too was in the position you are but I have always been an advocate of wait and see rather than second guess a situation.
Anyway, as she settled into her job and her friends moved off doing their own things our relationship grew and grew. 9 years later we are married and could not be happier.
So unless you want to end it just be yourself, don't start getting all whingey and resentful. Show her that you are going to live a full and exciting life and it's up to her if she wants to come with you and be part of it.
Try and get her alone, a weekend away somewhere, not a restaurant or a bar. Take some long walks on the beach or in the country no mobile phones nobody else around. Quality time is what you need with her to know what she is all about.