mmark,
I have to agree with the advice alreay given. It is time to move on. I know you don't want to hear this, but she may not have been even 18. She is at a point that she must go along with her parents, but you can find others who share your interests without worrying about outside influences. Let this chapter in your life close, and be ready to open another. Good luck - I wish you the best.
G