Complex sentence: Eliz had 2 sisters and a brother who her mother couldn't look after on her on therefore her mother married a Turkish man and Eliz always believed that the Turkish man was in fact her real father.
Split into simpler sentences: Eliz had 2 sisters and a brother who her mother couldn't look after on her own. Therefore her mother married a Turkish man and Eliz always believed that the Turkish man was in fact her real father.