HOUSTON -- A judge's daughter was found guilty Tuesday of intoxication manslaughter in connection with her boyfriend's death, KPRC Local 2 reported.

Elizabeth Shelton, 20, slammed her sport utility vehicle into the back of a box truck on the Southwest Freeway near Shepherd Drive on Oct. 23.

Matthew McNiece, 19, was killed in the collision.

It took jurors less than three hours to reach the verdict, a second-degree felony.

The panel gave Shelton five years in prison, which was probated to eight years. She will also spend four months in jail after Dec. 20, when her school semester is over. If Shelton violates her probation, it will be revoked and she will serve the five-year sentence.

Prosecutors said Shelton had a blood-alcohol concentration of .28 percent at the time of the collision. The legal limit for intoxication in Texas is .08 percent.

"Kids her age drink," mother Julia Shelton said. "It's not right, but they do it. From the night of the accident, Elizabeth has never been the same. She lost a part of herself. She lost her boyfriend who she, of course, loved. She lost her best friend and she's had to live with that since the day this happened."

McNiece's father said Elizabeth Shelton was like another member of their family.

"My wife considers her the daughter we never had. They shared things that a mother and daughter would share," Sid McNiece said. "She doesn't need to be in jail. She's a 19-year-old girl who made a very horrible mistake that she'll have to face the rest of her life."

Elizabeth Shelton is the daughter of State District Judge Pat Shelton.

"I think the jury said it doesn't matter how much money you throw at them, who you are -- if you drive drunk and kill somebody and that death is because of intoxication, you're going to be held responsible in Harris County," prosecutor Paul Doyle said.

Elizabeth Shelton is a student at the University of St. Thomas.