Clutching a well-worn teddy named "Little Bear," Paweenuch Supolwong fiddles with Buddhist amulets hanging heavy on her neck as her grandmother tells of the trauma still afflicting the 4-year-old.

Paweenuch, known by the nickname Ammy, was one of only two children to survive a massacre at a Thai nursery a year ago that killed 36 people and devastated the close-knit rural village of Uthai Sawan.

Now when she plays she is watched via CCTV — both at home and at nursery — to reassure her family.