I think you put yourself in her shoes, but with your own feelings. You say, "it's just a phase she'll grow out of" and she's been brainwashed. And that you couldn't be around each other without there being attraction for each other. Maybe for you there would still be attraction, but we don't know what she feels. And maybe her religion is more important to her than you are. I wouldn't understate the importance that religion has for some people. From her perspective, you could be like a drug dealer that keeps trying to get her rehooked on drugs that she gave up and wants no part of.
It's been 5 months since she talked to you. Do you avoid calling because if you don't, you can maintain the feeling that she still feels something for you, and a call has the potential to smash this illusion? You have more to gain from closure (your freedom, your life moving forward, ? chance of reconnecting?) than by waiting 2,3,4 years for something that may never happen.
In the end, it's not the years in your life that count. It's the life in your years. Abraham Lincoln
It is hard to fail, but it is worse never to have tried to succeed. Theodore Roosevelt
