HILLSBOROUGH COUNTY, Fla. — A jury has been selected and testimony has begun in the murder trial of a former Florida State student. 

Nicole Nachtman, 25, is accused of shooting and killing her mom and stepdad, Myriam and Robert Dienes, at their Carrollwood home four years ago.

"Rather than dealing with a strict mom, she decided to eliminate her from her life," said Assistant State Attorney John Terry during opening statements. 

According to the prosecution, Nachtman had a problem handling responsibility. Terry said after Nachtman failed to get student housing for Florida State University, Nachtman developed a trap to kill her mom and stepdad. 

"Rather than face the anger of her mom, she decided to kill her," Terry said. 

Nachtman allegedly traveled from Florida State University to their Carrollwood home in August  2015. She allegedly shot and killed her stepfather, and hid his body in the house. According to the prosecution, Nachtman then waited for her mom to return from a work trip to murder her.

The Assistant State Attorney told the jury that Nachtman confessed everything to her brother after the murders.

"She says to him 'I'm going to miss you Joey," Terry said to the jury. "He says are you going to kill yourself? And she said it real quietly. I did it. I shot them."

Hillsborough County Public Defender Julianne Holt is leading Nachtman's defense. 

She said Nachtman suffers from Schizophrenia and should be found not guilty by reason of insanity. 

"Nicole Nachtman's life and her experiences and the things that she went through led her to develop a mental illness," Holt said. "A mental illness that is real and that exists."

According to the defense, Nachtman's relationship with her domineering mom led to a psychotic breakdown.

But Holt said there were a number of red flags throughout the defendant's life that were unaddressed by family and friends. 

"She's broken because she lived in instability," Holt said. 

The trial is expected to last two weeks.  Nachtman faces life in prison if convicted.