Cassidy Stay, the 15-year-old sole survivor of a shooting that left her parents and all four siblings dead, spoke at her family’s memorial service Saturday in Houston. She quoted the character Dumbledore in the “Harry Potter” series: “Happiness can be found even in the darkest of times, if one only remembers to turn on the light.” (Reuters)

Cassidy Stay, the 15-year-old lone survivor of a shooting at a suburban Houston home that left her parents and four siblings dead, spoke tearfully at a memorial service for her family Saturday, saying they were “in a much better place.”

She thanked first responders, the community and hospital staff who cared for her after she was wounded in the Wednesday shooting and urged listeners to “stay strong” during the service at Lemm Elementary School in Spring, Tex.

Tearing up, Cassidy said she knew that her parents, two brothers and two sisters “are in a much better place” and that she would “be able to see them again one day.”

Ronald Lee Haskell — accused of killing Cassidy’s parents, Katie and Stephen, and siblings, whose ages ranged from 4 to 14 — was charged Friday with their murders.

Police say Haskell showed up at the Stay home Wednesday looking for his estranged wife, Melanie Lyon, the sister of Katie Stay.

When the family didn’t tell Haskell where his estranged wife was, police say he shot each of them in the back of the head.

Cassidy has been hailed a heroine for playing dead after she was shot, then calling 911 after Haskell left. Police later arrested him after a car chase and standoff.