Southport teacher Heidi Liddle recounts surviving a fatal attack and her ongoing struggle with guilt

A teacher recounts the trauma and guilt of surviving an attack where three children died, hiding with one student while others screamed. Heidi Liddle describes the chaos and her attempts to save children, feeling haunted by the sounds and the "what ifs" of the incident. The attack occurred last year at a dance class, and the perpetrator was sentenced to a minimum of 52 years.