3 years earlier. Lebanon Kansas.
Amber entered the bunker clumsily after a long night with the Winchesters. Dean wanted to celebrate their anniversary, and take Sam and Castiel with.
Just like the Winchesters, they wanted to go drinking. It wasn't anything new, but when you're told to dress up in your finest and go to the finest pub in town, it means the world.
She was very very drunk, but she still felt that she could make good decisions. Emphasis on felt.
"Hey, Amber." Sam slurred, draping his arm over her shoulders.
"Hi." She looked around, she noticed that 2 of the boys were missing.
"Where's Dean and Cas?"
Sam smiled and lead her through the library.
"Dean forgot something back at the bar, so Cas went with him." He replied bluntly.
Her vision was blurred, she felt herself blacking out. But she fought it for the sake of she didn't want Sam to have to carry her to bed because she passed out.
While they were walking, more like stumbling. They faced a Cora door, in one direction was Dean's room, and in the other was Sam's.
He lead her through the right side of the hall. Amber was confused.
"Where are you taking me?" She asked, trying to break away from Sam's grasp to correct his mistake.
"Just to my room." He harshly grasped her arm. "It's fine."
Amber let a small squeak escape her lips.
"Sam, your hurting me, I just want to go to bed." She kept struggling against his grasp. The instant that they entered his room, Sam slammed her against the wall, holding her hands high above her head.
"Your hurting me!" She yelled, trying her damn near hardest to break away from him.
"Come on, you'll eventually become Winchester to be, with that comes responsibility."
"What are you talking about?" Her breath hicked. She found herself unable to say anything more.
"Eventually Dean will want you forever, and when that day comes..-" He leaned into her ear and whispered.
"You'll be stuck. A Winchester curse is on all girls we treat like family. You'll die here."
Amber had enough, she fought and fought, kicking and screaming. He roughly grasped a hand over her mouth to muffle her.
"Shut up." He growled.
She did the unthinkable, butting into his hand, she felt the blood deep into her mouth. She watched as he reeled back from  her and hit her across the head, she held her ground and spit the blood onto Sam's shirt.
The grabbed both of her wrists and-
"Sam! What the fuck are you doing?!" Dean punched Sam in the face, Cas by his side, getting Amber out of Sam's room and into the library.
"Are you alright?" Cas asked, sitting her down In one of the chairs.
She sighed but was too drunk and shook up to think. Much less form a sentence.
She blacked out, the last thing she heard was Dean yelling at his brother.
"Get out!"
"But Dean, I-"
"Get the fuck out before I rip your God damn head off!"
? Hours Later
"Hey, Amber. Wake up." She felt a shoulder on her arm. She jolted up and started to breath heavy with panic.
"Hey, hey." Dean hushed, holding her hand to calm her down.
"He's gone."
She closed her eyes, and let out a relief full sigh.
"I don't understand." Was all she would say.
Dean kissed her hand.
"Hey, it's all going to be ok."

I'm here for you