I think there are unresolved issues there. She's not sure she wants to forgive you, but she's not willing to let go completely. Which means it's basically up to you to decide what you want to do.
If you want her back - do everything within your power to get her back, find out who got the ticket and prove it, woo her, impress her, don't take no for an answer.
If you're not sure - I say let it go.
In my opinion, hers is not the kind of mature behavior you would expect from an adult.