If you got the feeling she wanted to move on I'm afraid short of kidnapping her an riding off into the sunset with her tied to the back of your horse, there's not much you can do.
You should make it clear to her that you would like to get back with her, if she has any particular problems with you, such as your commitment, or you're out too much, explain to her that you understand her worries but that you will change for her (if you will). If she'll come out with you take hr out, treat it like a first date, treat her. But remember, persistence and desperation if she makes it clear she doesn't want to be with you again, is not only unattractive but can also be scary.