jcl76,
It sounds like you and her had some great times together. And seeing as her family really accepted you, that shows what a great person you are. You obviously love her and thought that you could have a life together with her. However, she was not emotionally ready for you. It sounds like she was trying to keep working on her old relationship and had no extra energy for you. Don't blame yourself and think "well, what if I did this", or " what if I did that"? I think whatever you would have done it wouldn't have been good enough for her. She admitted to you that "no man has ever loved me as much as you did", but she was still too blind to see that and move on with her life from her ex. I know it's hard being with someone who is just right in every aspect of things, but speaking from experience, if someone is not emotionally available then they are not ready to commit and who knows if they ever will be? Time to move on, put the past in the past and find people who are positive influences to you. You deserve it!