I think if she were to threaten Rumple/Gold with Belle, she would probably just show him a picture of her in her cell under the hospital, or give him some indication that she was still alive. Belle’s already being kept prisoner in a well-hidden place where all it would take is just one phone call from Regina and Belle would be “taken care of.” If you’re going to threaten your biggest enemy with their true love, you can’t let them know where you’re hiding them. 😕
Ah! Good point. 😉
I read a spoiler that said that Belle will be in episode 1×19, “The Return,” but I could have sworn she was supposed to return in the finale. I'm not complaining, just curious. 😆