A few random pieces of advice:
All women are unique. There is no way of completely knowing her motivations. Chill out for a while. You could still call her and hang out with her, but just keep the relationship question in the background, and make it much less frequent than it has been up to this point. That will help give you both a little breathing room to sort out your thoughts. If you think that you want to keep her, do not date. Just spend your spare time doing other things that you like to do and hang out with your friends. Seeing you with another girl may bring her back, but there will always be questions in her head about it, and it will probably create problems in the future (it will come up later when things aren't going well). Give that a try for a month or so, and then collect your thoughts and see where it goes from there. If you still want to be with her, tell her that in an open and honest way. If she is still not sure, then it is probably time to move on.
All women are unique. There is no way of completely knowing her motivations. Chill out for a while. You could still call her and hang out with her, but just keep the relationship question in the background, and make it much less frequent than it has been up to this point. That will help give you both a little breathing room to sort out your thoughts. If you think that you want to keep her, do not date. Just spend your spare time doing other things that you like to do and hang out with your friends. Seeing you with another girl may bring her back, but there will always be questions in her head about it, and it will probably create problems in the future (it will come up later when things aren't going well). Give that a try for a month or so, and then collect your thoughts and see where it goes from there. If you still want to be with her, tell her that in an open and honest way. If she is still not sure, then it is probably time to move on.