Happiness of Kati (2009)

An adaptation of the novel by Ngarmpun "Jane" Vejjajiva about nine-year-old Kati's sorrow and hope. Kati lives with her grandparents, and cannot even remember her mom's face. Still, she is a normal, always cheerful child, due to her family and friends. One day, Kati meets her sick mom, and comes to learn why they were separated and how much her mom loves her. In reality, however, her grandfather is the most important person to Kati. He constantly talks with Kati to help her overcome sadness and grow up.