Quick slip of the tongue

Dot asked for a oneshot of Emma accidentally telling Snow she's her mom when she's back in time.

"Can you bring Snow back?" Red said, pleading with the fairy.

"Dark magic did this to her, light magic can undo it." The Blue Fairy said in response. With a brief wave of her wand, Snow was a bug no longer and back to her human self. All those around were relieved to see Snow alive and well, but none more so than Emma.

"You're alive!" She cried out, pulling Snow into a bone crushing hug. Emma was too relieved that her mom was ok to notice that she wasn't hugging her back in the warm way she normally did. When Emma pulled back from the hug, her smile faded. Her mom was looking right through her. It shattered Emma's heart.

"It would appear so…thank you." Snow responded, alarmed at the overzealous response from a near stranger.

Emma reached out and grabbed Snow's hand as she turned to hug Red.

"Swan." Killian warned, trying to hold her back, but Emma shrugged him off.

"No, I can't take it any longer. You just looked right through me. You've never looked at me like that. You're my mom." Emma blurted out. Emma felt her mom tense in shock.

"Excuse me?" she asked. Killian could see there was no point in stopping things now.

"We fell back in time. My physical appearance is disguised. We ruined everything and I had to fix it because otherwise you two would never have met, and if my parents never met then I would never have been born…"

"Wait, parents?" David interrupted. "So I'm your father?" He asked. Emma nodded. He then turned to Killian.

"So all that talk about approval from her parents earlier and you knew she was my daughter?!" He asked, fuming.

"Really mate, that's what you want to focus on right now?!"

"Ok, I think we've all heard enough." Blue said. She raised her wand and everyone was frozen apart from Killian and Emma. Another wave, and all those who were frozen flashed.

"I will also cast this spell over myself in a few moments. It will cause us all to cease to remember you both being part of this story. I think that is best for all our future selves." Blue said firmly. "Both of you go, now. Find a way home to your own time now that you have repaired things here." Killian was relieved that Blue had fixed that. He knew Emma would regret that slip of the tongue. He tugged on her shoulder and they went speeding off to find Rumplestiltskin. It was time they went home.