A 15-year-old US girl who survived an attack in which her parents and four younger siblings were killed says she’s on the road to recovery.

Cassidy Stay thanked first responders on Saturday while speaking to a crowd at an elementary school in her hometown of Spring, Texas, the Houston Chronicle reported. It was her first public appearance since the shootings.

“Happiness can be found even in darkest of times, if one remembers to turn on the light,” Stay said, paraphrasing a quote by Albus Dumbledore, the beloved headmaster of the Hogwarts school of wizards from the Harry Potter books.

Stay was released from a hospital on Friday, two days after the attack in which her skull was fractured by a bullet graze.

Authorities say her aunt’s ex-husband, Ronald Lee Haskell, stormed into the family’s home Wednesday and shot dead her parents and four siblings, who ranged in age from 4 to 13.

They say Cassidy Stay survived by playing dead and called police to warn that Haskell intended to go to her grandparents’ house next.

“I’ll be able to see them again one day,” she said of her slain relatives.

Authorities have said Haskell was searching for his ex-wife, Katie Stay’s sister, when he forced his way into the home.

He tied up the family and put them face-down on the floor before shooting each in the back of the head, according to investigators.

The family had refused to say where Haskell could find his ex-wife.