Boon Auan Khamsook is originally from a remote village in the north-west of Cambodia. In 1974, she went across to the Thai border to sell charcoal. When the Khmer Rouge sealed the border she was trapped on the Thai side and unable to return home. It was the last time she ever saw her family. This is Boon Auan today and her Thai husband, Malee Khamsook, outside their home in Si Saket province, Thailand.