This was written for NegativeBlue, who suggested the idea over on Tumblr. This is 1 of 3 parts (unless you guys have situations you want me to write in addition to the ones I have planned) and the other two parts should be up relatively quickly. My muse is currently being fickle, so I decided to post this now instead of all at once. Enjoy.

I do not own OUAT.

It had been funny at first.

The simplest spell any magic user could learn, and Emma somehow managed to mess it up, despite having successfully done it several times before. Apparently when not under pressure, her mind began to drift.

Regina had been showing Emma how to create flames of various sizes. Instructing Emma to light a fire in the heart, she had been surprised when Emma was suddenly surrounded by white smoke. When the smoke cleared, the brunette blinked in confusion.

Nothing had changed. Her eyebrows furrowed as she looked at Emma, trying to figure out what had happened. Emma was staring at the floor in deep concentration.

"Emma?" At the sound of her name, the blonde looked up at Regina, simply gazing at her for a few moments before reaching out a hand and grabbing the other woman's wrist, jerking her towards her.

Regina's increasingly agitated questions were been silenced by Emma running her hands over Regina's body in a far to intimate manner. Of course, it had only occurred to Regina later that she had been checking for signs of damage or injury. But at the time, the best course of action had been a fireball.

At the sight and warmth of the fire, Emma jerked back and let out a wordless cry of alarm, waving her hands and trying to drag Regina away from it, her cries of confusion only getting louder when the fire seemed to follow her. Only when the brunette extinguished the flame did Emma finally calm down, her wide eyes now focused on Regina's unblemished hand.

It took a few more moments of trial and error and attempts of communication - several of which ended in Regina producing a fireball out of irritation - before she finally concluded that Emma had managed to give herself a mind to a caveman - apparently connecting the delicate art of magically conjuring fire with the simple ancestors of the human race. Regina just stared at the other woman when she realized, a smile slowly spreading across her face as she watched Emma wander around the room and poke at various objects, occasionally letting out grunts of some unknown emotion.

A snort managed to slip out of her mouth, setting her off. Before long, Regina was doubled over in laughter, tears running down her face. If she had known that it would be this easy to silence the always frustrating and sarcastic Sheriff, she would have suggested magic lessons long ago.

Eventually she managed to control herself long enough to call Snow and Charming over to collect their daughter. Emma followed Regina from room to room, gesticulating wildly and trying to communicate through a series of grunts and whines. Regina had tolerated this, as the blonde seemed to be harmless enough in this form - although her newly developed habit of hovering right behind the brunette left a lot to be desired.

-SQ-

To say the meeting between Emma and her parents had gone badly would be an understatement. It had been going fine until Snow snapped at Regina for teasing Emma with little fireballs floating around the room. Very quickly, Emma forgot about dodging the tennis ball sized fireballs and stormed over to stand in front of Regina, puffing out her chest and growling at Snow.

"Why is she doing that?" Snow reached a hand out towards her daughter, quickly withdrawing it to her side in shock when Emma grabbed the nearest blunt object - a lamp - and brandished it threateningly.

Regina rolled her eyes and removed the lamp with a wave of her hand, leaving Emma staring down with wide eyes at her hands, flipping them this way and that in an effort to find her weapon. Regina turned towards Snow and smirked. "Apparently she feels you are a threat to me."

"But why is she protecting you?"

Regina sighed and rubbed the back her neck - she didn't like complications and if she was correct, this would be a rather large one. "She magically transformed her mind - think of it like a reset. I was the first person she saw, so her mind most likely latched onto me as someone important. Think of a baby duckling imprinting on its mother." It wasn't the most common occurrence, but the only one that could account of the blonde's radical change of actions.

Snow frowned and turned her eyes back to her daughter, who had now resumed walking around the room and poke objects - although as Snow and David were still in the room, she was never more than a few feet away from Regina. "So she think you're her mother?"

Regina's mind flashed to earlier when Emma had searched her for injuries and managed to fight off a smirk. Those weren't the actions of a familial relationship. But as much as she would love to torture Snow with the mental images, if she wanted to revert Emma back into a normal human being, she would probably need their assistance at some point or another. "Exactly. She's simply protective of me because her mind only knows me. She has no memory of either of you."

"And what about Henry?"

A wince flickered over Regina's face momentarily before she managed to quell it. "I'm not sure to be honest with you. At the very least, she should be intelligent enough to take notice of my feelings towards him and be tolerant to his presence." At Snow's raised eyebrow, the brunette sighed, suddenly drooping in exhaustion. "Look, if something happens I will call you and Henry can sleep over for a couple of days, alright? As much as I don't want her here, it's probably best that she remains where she is calmest."

It took a few more minutes, but Snow and David - who seemed fascinated by his daughters action rather than concerned - finally left, leaving Regina alone to figure out how to deal with the situation.

She sighed heavily and watched Emma poke at some plastic flowers. She had no idea how this would go and worried that Henry would blame her once again.

A few hours later, after a difficult time while teaching Emma to use an indoor bathroom - only resulting in a minor burn for the blonde - Regina heard footsteps on the front path and hurried to the front door to meet her son.

"Henry, we need to talk."

"Am I in trouble? Did something happen?" His eyebrows came together in confusion, trying to remember if he had done something wrong that day. Tripping Hansel hadn't seemed like a bad idea at the time, but maybe his father had complained to one of his mothers.

Regina drew Henry into the house, stopping in front of the kitchen doorway. "No, nothing's wrong. Well not fatally wrong. Emma… Had a bit of an accident today during our magic lessons and she will be staying here until we can fix things."

Henry's confusion didn't lessen but before he could ask the blonde woman herself came ambling into the room, stopping when she saw Henry. Regina watched carefully, prepared to intercept, but when Emma came over the stand beside her son, turning him this way and that to check to injuries, the brunette relaxed.

"Uh, Mom? What is she doing?" Henry tried to shoo off Emma's hand, and was growled at until he stopped and let her continue her check.

Regina sighed before using magic to gently move Emma back a few feet, holding her feet in place until the blonde got the message and meekly stayed in place. "Your mother switched her mind with that of a caveman of some sort. I'm not exactly sure how, so it will take some time for me to figure out the reversal spell. Until then, we will just have to deal with her the best we can. Ok?"

Henry nodded, a smirk building on his face. Had Emma been able to speak, she would have pointed out that her son looked disturbingly like his other mother.

"This could be fun."

Alrighty, hope you guys enjoyed this first part! Let me know if you have any situations you want me to put in here! Please leave a review so I know you guys are enjoying this.