I don't want to take your feelings of love for her lightly, but I think that most mature ones on this board will agree with me that there are many people that we can love in our lifetime. Who we 'choose' to be with, is a different matter.
She is yanking your chain by insisting on holding all the cards. That is a JW ploy that they do without even realizing it. Making others run after THEIR affections. Ask any of us that have are disfellowshipped and are being shunned by family. They manipulate and hold over us our love. They want US to run after THEM. It is a very dangerous and hurtful game. Innocently, she is holding onto you for her own satisfaction, letting YOU run around trying to right the situation, yet she shows no displays of any 'unconditional' 'true' love. She is doing this by feeding you little morsels of love, little tokens of affections that you lap up like you are starving. How cruel to do to a person displaying real love. SO many of us have experienced being fed the morsels of JW love, it eats you alive inside out. I honestly don't know anymore if most JWs even know what it means to really really love someone. Their vision of love has been skewed.
Let her go. As harsh as that sounds, it is what you really want in the long run....for her to come to you OF HER OWN ACCORD, not pressured by YOU or pressured by her PARENTS, but of her OWN DECISION. Who wants someone with them that will not stand up and FIGHT for the one they love? Not me. I am so sorry you have to go through this, but there are many lessons you will learn.
Jez