If she doesn't want to talk about it then what can you do? You can't make her talk to you and you can't make her stay. People are childish when it comes to matters of the heart. It's unfortunate but it's true. If you're asking for my advice: Forget about her, what's done is done and you'll always associate her with this pain she caused you.
"just can't enjoy anything without her. She was my life, 24/7"
-I don't think this is a healthy way to live any relationship anyways.
I'm truly sorry this happened to you.
"I only wanted someone to love, but something happened on the way to heaven"