Confused And Conflicted. (SPN+Avengers reader insert)

Chapter 2

You weren't with your family when the crash happened, you were with Bobby. When you see the Impala, you angrily punch it. You weren't expecting to send the car flying ten feet away from you, nor were you expecting it to roll onto the roof.

Curiosity getting the better of you, you walk over to the car. Wondering if you could move your brother's car again, you push against the side. After five seconds the Impala is back on its wheels. You then push the car back to its original spot.  You don't realize that Sam saw everything, and your brother is gobsmacked. Dean's car weighs at least two tons, an average joe can't move it- a five year old... that should be impossible.  

Granted, you have always been a little different. You can do any physical activity longer than other kids in your grade- despite the fact you're a little heavier than them. Then there is the fact that you are five years old and have never gotten sick. Now apparently you have super strength. Sam shakes his head, he loves you too pieces but you are the biggest mystery sometimes.
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-Sam POV-

I feel like I should go tell someone about my sister's superhuman strength, but I don't know who to go to. Dean is currently in a coma, Bobby possibly already knows about Y/N being able to move a car, so that just leaves dad. I'm hesitant to go to him, but honestly the way how my five year old sister moved Dean's car like it was nothing is a little concerning. I then make up my mind and head to dad's hospital room to talk to him.

"I kid you not, Y/N moved Dean's car like it was nothing." I say. Dad presses his lips together thinking of a response.

"I want you to make sure that your sister isn't a demon." Dad says with a sigh, he then closes his eyes. "If she is, you know what to do... but try not to kill her." I nod and then take my leave back to Bobby's. Y/N is playing in the yard, when she sees me her (eye color) eyes light up.

"Sammy!" She says, running towards me. I smile and hug her when her small arms wrap around my leg.

"Hey bug." I answer. I don't want to splash her with holy water, but I do know another way how to reveal a demon. "Christo." I say, my kid sister looks up at me curiously.

"Why you speaking Latin?" Y/N asks in perfect Latin, I throw her a look.

"I could ask you the same question." I reply, also in Latin. Not sure where Y/N learned how to speak Latin so fluently, currently I'm blaming Bobby. Speaking of Bobby, he's currently on the doorstep laughing.  "Why do you find that so funny?" I ask, facing him.

"She did the same thing to me." Bobby answers.

"Randomly talking in Latin?"

"Not just Latin, she was also talking in Japanese." I shake my head.

"The mystery around that kid keeps growing."
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-No one's POV-

Sam takes you to the hospital to see Dad and Dean. The two of you get there when Dean wakes up, you literally cuddle up next to him.

"What are you doing (nickname)?" Dean teases. You just flash him a smile, causing your brother to roll his eyes and ruffle your hair. Just then John Winchester pokes his head in. He smiles at his three children. Sam sees your dad and walks over to him and whispers something. You become confused on why they're whispering, but you don't bother to ask. About ten minutes later, your dad passes away.

"All of that is from the semi?" Dean asks when he first sees his car.

"Not all of it." Sam replies. You sheepishly look at the ground.

"Some of it is from me." You say in a soft voice, you haven't said much since Dad passed away. Dean throws you a look, surprised you said anything.

"What do you mean, some of it was you?" He asks.

"I did this." You answer, as you push Dean's car hard enough that it just rolls over onto its side, before putting the Impala back on its wheels. Dean looks surprised before he tells you that he needs to talk to Sam alone for a little bit.
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-Dean POV-

Y/N goes to play on the other side of the yard. "She's human." Sam says in a low voice. "I already tested her."

"You serious?" I ask, shocked.

"Yeah... then there is the fact that she's been learning Latin and Japanese behind our backs."

"What is that supposed to mean?"

"Bobby told me that Y/N has sassed him in Japanese more than once. Also when I tested her, she randomly started talking in perfect Latin."

"How can a six year old be fluent in a dead language?" My brother shrugs in response.

"The mystery deepens."