AMES, Iowa — They had both recently turned 22 and were residing in the same Iowa college town, but their lives couldn’t have been more different before allegedly intersecting in the most violent way.

Celia Barquin Arozamena was a top amateur golfer from Spain who was finishing her degree at Iowa State University. Collin Daniel Richards was a former inmate from small-town Iowa with a history of violence.

The Big 12 conference champion, Barquin had dreams of making the pro tour and spent hours practicing at Coldwater Golf Links in Ames. Jobless and homeless, Richards had been living in a tent in an encampment near the course and had spoken of his desire to “rape and kill a woman,” police said.

Richards was charged with stabbing Barquin to death during a random attack while she was golfing by herself in broad daylight on Monday morning. Barquin’s body was found in a pond on the course near the ninth hole after fellow golfers noticed her abandoned bag and called police. Richards was arrested within hours, suffering from injuries to his face and hand after Barquin apparently tried to fight him off, investigators said.

“My girl. Such bad luck she had,” her mother, Miriam Arozamena, told Spanish broadcaster Tele 5 on Wednesday.

Of Richards, she said, “He was just going out with the goal of killing. … And he came across my girl.”

As Barquin’s colleagues began grieving the loss of a talented teammate and classmate, Richards was ordered jailed on a $5 million cash-only bond at the county jail and facing the rest of his life in prison. It was, said Iowa State football coach Matt Campbell, a “cowardly act of violence.”

The university had planned to honor Barquin at its football game Saturday for being its female athlete of the year — news that had brought Barquin to tears, according to athletic director Jamie Pollard. Instead, football players will wear helmet decals with her initials to mourn the loss.

“We’re all devastated and heartbroken,” said Pollard, who choked back tears at a news conference.

The golf course issued a statement calling Barquin an amazing young woman with an infectious smile who “made the people around her better.”