You and Sam have known each other since you were children. This is because you are Bobby Singer's daughter. Sam and Dean used to get dropped off at your place weeks at time whilst John went on hunts and then would finally pick them up.

You started hunting with Sam and Dean after Jessica's death years ago. Over this time, you and Sam grew close... and fell in love.. that is until a hunt went wrong... and you didn't make it. You died.

Now, at this point, you had been dead for months. Crowley was a crossroads demon Sam and Dean had recently met, a demon trying to help them put Lucifer back in the box. But, on occasion, Crowley likes to have some fun, and once he caught wind of your death...

Crowley brought you back! But... you aren't human. You're a demon. He traded your soul for your life.

One night, Sam trudged back to the motel room alone after a hunt alone. Dean was off at the bar drinking. Sam just wanted some sleep. He unlocked the door and opened it to see a familiar figure standing in the middle of the room...