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BROOKSHIRE, Texas A 26-year marriage came to a violent and deadly end Friday after a husband killed his wife at her place of employment and then went home and killed himself, according to the Fort Bend County Sheriff's Office.

It all began when Valerie Robinson arrived at Tompkins High School in Katy, where she worked as a cafeteria worker, around 6 a.m.

Authorities say Gregory Robinson, her estranged husband, shot her in the back while in the parking lot at the school. A parent witnessed the shooting and saw Mr. Robinson armed with a shotgun and flee the scene in a truck.

The high school cross-country team was on campus when it happened and heard the gunshots, but none of the students saw what happened. Two coaches instructed the students to take cover inside the school for safety, while they ran to help the victim. The coaches performed CPR on the victim until paramedics arrived to take her to the hospital. But sadly, the school confirmed a short while later that Mrs. Robinson, who had worked with the district for 18 years, had died.

Fort Bend County Sheriff's deputies tracked her husband to his home in Brookshire, where he had barricaded himself inside. He had also left the engine running in his truck.

After a few hours-long standoff, SWAT team members entered the home to find Gregory Robinson dead from a self-inflicted gunshot wound.

Loved ones spoke highly of the woman they lost.

'She was just a pleasant person, you know, I have to let you know that she was a very pleasant person,' said Laticia Upshaw, a friend. 'A lot of times that I seen him (Gregory Robinson) he was pretty much to himself. From time to time, you know, you'd see things that wasn't too pleasant.'

Family members were very emotional after arriving to the home and hearing the tragic news. They said the Robinsons had a rocky and abusive relationship and, although the wife left numerous times, she would give her husband chance after chance to make things right.

'She wanted to make it work,' said Clarissa Coleman, Valerie Robinson's sister. 'When she thought he changed or something changed, she'd come back and it was the same thing again and she's leave again. That was basically it.'

The couple had three children and some grandchildren as well.

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