1) eiather zoya's mom was married to razias husband and razia found out couldn t help herself and killed her thus causing zoyas moms death in the fire etc and maybe zoya as a child was found in the fire and rescued.. and thats why her father )razias husband) disappeared or he saved her and left her to safety but then never returned
2) or razia just killed some next women and we dont even know who she is but maybe zoyas dad worked there and he was there the fire started and maybe the family was nearby and caused her moms death and razia prob paid the dad to leave
3) this has nothing do with zoya and razia did this cuz shes CRAZY!!!!!!!!!!!!!!!!!!!!
i dont know just my thoughts my brains going crazy :P