One happy family

Lily Luna potter ran away to New York when she found out she was pregnant with her cousin's boyfriend's baby at 16 and has had a happy life as Zelena potter with her daughter Harleen lily potter for the last 16 years but when Albus sees a girl he could swear it looks like his long lost sister only with bleach blonde hair he get suspicious and tries to get the girls name only to find out that her name is Harleen Potter and from close up she could be his little sisters twin and goes from there.