MCKINNEY (CBSDFW.COM) – A former Park Cities real estate agent will serve eight years in prison for an attack on her ex-husband that was recorded on a smartphone.

Collin County prosecutors say that recording shows women can be just as abusive as men.

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But in an exclusive interview from jail the woman claims authorities are unfairly punishing a battered wife.

“Shocking that it was able to happen to me and that I’m the one being punished,” Julia Decatur said.

The 40-year-old woman’s smartphone is part of the reason she was sentenced this week to eight years in prison.

It recorded a fight between Decatur and her ex-husband Scott in front of neighbors outside this Plano apartment complex.

Prosecutors said you can hear Decatur stabbing her ex in the back with their teenage daughter watching.

“The evidence showed that she had expressed to her daughter that she intended to stab her husband,” said Lauren Hopkins, Collin County Assistant District Attorney.

Decatur insisted she was just fighting back after enduring years of abuse.

“It was self-defense.  We were both involved in a fight,” Decatur said. “We tussled around with the knife I broke free, and I left.  It was not to my understanding he was even injured.”

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But prosecutors said witnesses in the Plano apartment complex never saw the ex-husband fight back.  Schrader recovered from his injuries.

A Collin County jury returned an eight-year sentence for aggravated assault.

Authorities said it sends a message that women will be punished just as severely as men for domestic abuse.

“We are very pleased with the results,”  Hopkins said.

Decatur’s smartphone was recording the fight because she says she did it for her own protection.

But in this case it worked against her.

She hopes to get out of jail soon while her attorneys appeal the conviction.

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