Ami,
I think this is one of the most important things you have ever written on this forum, Ami:
"Today, I play the paino and guitar. I don't have to punish myself anymore. It was all to keep HER "real" and ME "dead." Now, she is "dead' and I am 'real". Amber, I think that is a key for me. Who is the 'real" one?. It didn't work. All these years later, she is exactly the same as when I left her--bleh.
I do not have to take away my joy anymore .so I could be the "bad" one(for my M)"
You've 'seen the light' completely, even though it is so painful to do. You've finally got there, and now it's clear what needs doing next. Looking after YOU.
SHE needs to look after herself. You can't do it for her.
I do think it is important, as Hops said, that you contact your dad in a way that cannot be intercepted by her, to make it very clear to him, that stopping all contact with HER doesn't mean that you want to stop all contact with HIM. She will, most likely, convey HER take on the situation in those terms to him, because then she can offload the 'real reason' for the NC as being his fault in some way, or yours, but never hers. So, please get in touch with him as soon as possible.
It will get better than this, eventually, I promise.
Janet