Most Helpful Girl
To it seems like it she's adamant about staying broken up. You said you tried to talk to her and fix things between you two, but you didn't get back together. in my opinion it means the issue is with her. Something's holding her back even tough she might still have feelings for you. I'm not sure there's anything you can do to convince her.
Maybe you should try to move on. Personally, I believe that "if it's meant to be, it's meant to be". And it's not like you didn't fight for her.
I hope everything will turn out in the best way for you.