It had been a simple gesture. Robin reached over and placed his hand on Regina's. It was so small, but it was enough. Emma's eyes shot over to them and dropped to their hands. Anger surged through the savior, just as it had when they were in the library. She had let it go then, but now... Now she was the Dark One and her self control wasn't so strong. She zapped his hand from where she stood, causing him to pull away from the brunette.
"Ow!" he whined. "What was that?"
Regina must have felt the surge of Emma's magic or maybe had seen the gleam of a smirk behind her facade, because she shot the blonde a look that said they would talk about this later. She then feigned ignorance with Robin. "What was what?"
"It felt like something stung my hand," he said. "You didn't feel it too?"
"No," she told him. "Go into the bathroom. In the medicine cabinet I have a little pink potion that heals just about every minor wound." As soon as he was out of the door, she rounded on Emma. "And just what do you think you're doing Miss Swan?"
Emma giggled, not quite in the way that Rumple used to, but similar enough to make Regina wonder how much of him was affected by being the Dark One and how much it was affecting Emma.
"I was making him let go of you," she answered as if it was the most obvious thing in the world.
"Well, I see that. Are you going to tell me why or am I going to have to pry it out of you?"
"Ha! I'd like to see you try," Emma challenged. Then she remembered that it wasn't Regina that she wanted a fight with. "I just don't like it when he touches you. I'm still pissed about the way he treated you in New York. You're just okay with that?"
"We've discussed it. How did we expect him to act, Emma? She is carrying his child after all."
"I don't care!" Emma shouted, barely having let Regina finish. "It doesn't matter what happened! He should have trusted you! He says he loves you, but how can he if he doesn't trust you?"
Regina stared at Emma. The former savior was practically glowing in her anger. She had to get Emma to calm down. "Emma," she started, "What's really going on?"
"Nothing," she said, not quite meeting Regina's eyes.
The mayor crossed her arms and met the Dark One's eyes with her own. "You're super power must have rubbed off on me, Savior. It may not be perfect, but I always know when you're lying."
It was Emma's turn to stare. She remembered saying that to Regina once. It seemed so long ago, another lifetime, but it worked. The gleam returned to her eyes, they softened as she stared at her best friend. "This really is about him, Regina. I think you deserve better. You deserve someone that trusts you, that believes in you. I've always thought that. This, being the Dark One, it makes it hard to control my emotions. I'm sorry."
Robin came back into the room, stopping Emma from saying anymore. That was probably best. She was so tempted to tell Regina just who she deserved, but she couldn't. It would have to wait until she had this darkness under control, and maybe not even then. She had been waiting for this long, she could wait a while more.