In her previous life her older brother was the perfect model student so everything she did was overshadowed by him, she lived on his shadow but she still worked to be her own person and made her own friends yet...
her brother started tailing her even after she left home. She got seriously disturbed(or creeped out) one day when he just so happened to cross paths with her she had a panic attack and ran away which lead to her death in a car accident.