Trying to figure out what to do.?

Relationships are built on trust and given your description you have been a good friend to her, but she has perhaps not been great to you. She is leaving you hanging while she considers her options. From your perspective, you can continue to hope that she changes or find someone else that is a more appreciative partner. If you begin the process of finding someone else there is always the possibility that your girlfriend will change in the interim. More importantly, you will see how someone else responds to your attention. Good luck!