Belle tilted her head, laughing a little. "Well, this whole town is fairly impossible by most people's standards, yet," she gestured, trying to keep her smile in place--barely holding back the desire to just throw her arms about him, since he seemed so--wary? Afraid?. "Here it is."
Of course, if this had been the other way around--if he'd been the one insisting on being real--she'd have understood. She'd seen him often enough in her cell, after all, sworn she felt him instead of her own hands in the dark. But the fact that he seemed to think her some...trick? It reminded her of that awful evening, when he thought she'd turned against him, sided with Regina. As if she would ever do such a thing. She'd sooner side with the damned Council than that horrible woman, or the man who'd come asking how to kill him.
"I...give you my word, this is all very real,"she took a few careful steps closer to him, close enough to take his hand--which she reached to do, hoping he wouldn't pull back, hoping this would prove she wasn't some dark parlor trick. "I'm real."