The watchtower chains got broken and she doesn't want to be with you anymore. I presume the reason she didn't want to discuss TTATT with you was because she didn't want to face this fact.
It happens in the real world, people fall out of love. I'm very sorry. Think about it this way though, would you rather her be brainwashed and stick with you because of a controlling religion? Now you have the opportunity to find someone who is right for you and will love you as much as you deserve.