El año del sol quieto (1984)

Shortly after WWII an American soldier (Norman) and a Polish refugee (Emilia) fall in deep love. Eventually he will return to USA and both expect that she will soon follow him. Emilia's mother is sick but would recover by available medicine. Somehow the mother but not Emilia knows that there will only be one ticket. Realising that Emilia would never abandon her, the mother secretly throws away the daily doses given her by Emilia - and dies