Hope Onyx Cornish, 18, was shot and killed in her home in Caldwell, Idaho, on August 18, 2025. Known as Onyx to friends and family, she had been sober for more than a year and worked at a local Wendy’s. Her death was committed by her father, 51-year-old Delbert Cornish, who told police he had planned to kill his three children and then himself and carried out the killing after drinking several shots that morning.

Delbert reportedly shot Onyx in the head when she opened her bedroom door, watched her gasp for breath for nearly twenty minutes, then covered her with a Pride flag and killed her cat. Her teenage brother returned home from school, was told what had happened, struggled briefly with their father, escaped unharmed and called 911. Delbert fled but was arrested about 70 miles away in Mountain Home the same evening; he confessed and was charged with first-degree murder, assault with intent to commit murder, and animal cruelty.

What details do readers remember about the Cornish family or that neighborhood that might help explain how this tragedy unfolded?