The Real Lives of Melanie Winchester
SteamoReaper
Melanie Winchester was supposed to be the Winchester infected with demon blood but, on the night that she was supposed to be fed demon blood, an angel rescued her and they got trapped in another reality and were separated.
Not knowing her real identity, she grows up as Alexa. During her eleventh year of school, the angel finds her and she is returned to her original life.
Here, she discovers that her older brother, Dean, has aged faster than her, discovering him to be 34. She also discovers that she has a 'younger' brother, Sam, who ended up having the destiny that was designed for her.
She has choices to make. Should she and her angel go back in time and rectify this, or attempt to live in this new life, knowing that she caused her brothers years of pain, suffering and strife?