2 slowly change

so while stalking the poor young lady he found out he had a class with her and he would sit in the back to stare at her like a creep. after school she would get in a car with a man he guesses a father or a male relitive of some kind but the way he looks it was most likey a father. then everthing went down hill after her father got remarried and it had been six months into the marriage but at the time no one knew this.

out of the blue,completely random she just changed but the changed was like she randomly came to school in rocker outfits it was more subtle than this it was so small that normal pople would not have caught the change only a true friend,lover or "cough" "cough" stalker would have noticed the change.

the only person in the whole school and i mean the whole school no teachers,other students,her friends,principles,lunch ladies, you think of a person that person didnt notice the change. the only person in the whole school that noticed anything was off was the stalker but said nothing he didnt have evidence something was serously wrong and who would if anyone else would have noticed like a student (not the stalker) or a teacher perhaps they would think she was going through an identity crisis.

the first change was that she stopped wearing beatiful dresses everyday to school and only wearing long sleeved shirts and pants and the pants slowing changed from blue jeans to sweat pants.

but why did she change?