An 18-year-old beauty pageant queen who overcame childhood struggles including homelessness and an abusive mother was killed in a car crash with a tractor-trailer in Florida.

Kadance Fredericksen, a former winner of the Miss Okaloosa County Teen USA title, was driving Monday on Highway 4 when she collided head-on with a tractor-trailer, according to Florida Highway Patrol. The cause of the crash is still under investigation, and the tractor-trailer driver — who suffered minor injuries — was not arrested.

Fredericksen, of Baker, Florida, had recently received a $40,000 college scholarship, she announced in her final Instagram post on Feb. 7.

“I am incredibly grateful to be selected as a recipient of this year’s Ellison McCraney Ingram Foundation $40,000 Scholarship,” she wrote. “This generous support will help shape my future and bring me one step closer to achieving my dreams. Thank you to the Ingram family, the foundation, and everyone involved for this amazing honor!”

Kadance Fredericksen was a senior at Baker School in Florida. (Baker School)

“Kadance was a beacon of light in our community, known for her compassion, tireless advocacy for children in need, and unwavering dedication to making a difference,” the post continued. “Through her efforts with Kada’s Promise, she brought hope and comfort to thousands of children experiencing trauma, collecting and distributing over 12,000 teddy bears and blankets to children in need. Her work inspired us all, and her legacy will live on in the countless lives she touched.”

A candlelight vigil will be held at the school on Wednesday night.