Mother of Santa Fe victim reveals possible motive for the massacre — and it involves her daughter

A mother whose daughter was murdered on Friday when a 17-year-old gunman opened fire at Santa Fe High School in Texas killing 10 people has revealed a possible motive for the massacre.

The mother told a newspaper over the weekend that the killer pursued her daughter for months to no avail and was specifically targeted.

What are the details?

Sadie Rodriguez told the Los Angeles Times via Facebook message that the suspect pursued her daughter for months, but she turned him down, angering him.

Rodriguez's told the Times her daughter, Shana Fisher, "had 4 months of problems from this boy."

"He kept making advances on her and she repeatedly told him no," she explained.

Despite being told "no," the suspect became more aggressive in his pursuit of Fisher, Rodriguez said. It came to a head in recent weeks when Fisher reportedly stood up in class and "embarrassed" the killer, her mother said.

"A week later he opens fire on everyone he didn't like," Rodriguez said. "Shana being the first one."

However, it's not clear if Fisher was the first victim. Rodriguez did not tell the Times how she knew her daughter was the first casualty.

The killer, who waved his right to remain silent, confessed to police. He told authorities he targeted people he did not like and spared the lives of those he did like so "he could have his story told," according to the LA Times.

Who was Shana Fisher?

According to the Houston Chronicle:

Shana Fisher, a "beautiful, smart, funny and talented" girl who just turned 16 on May 9, and "loved life and her dog Kallie. She was shy and sweet," her mother said. "She had a lot of love in her heart."