Dorri is Farhad and shereen's daugter who is grown up in USA so she knows many things about this country, it's rules, people and the quality of relationship between them that her father dose not. She also is in her parents love and always try to care them. Specially for Farhad, Dorri is a very piteous and sympathizer friend so never leaves him alone with his difficulties. Something we can see in gun shop and after his gunshot sequences clearly.