TAMPA, Fla. — The brother of a former Florida State University student is expected to take the stand Tuesday morning in the Nicole Nachtman murder trial.

Nachtman is accused of murdering her mother and stepfather — Myriam and Robert Dienes.

On Monday, the jury heard from five witnesses, including a former college roommate.

Jacqueline Roman-Eisenmann shared a dorm room with Nachtman from 2014 to spring of 2015.

“She had a fascination with Elsa, the Disney character,” said Eisenmann. “I didn’t think that was age appropriate."

Eisenmann described Nachtman as a loner, who stayed up all night and slept all day.

She testified Nachtman didn’t shower often, wore three layers of clothing, was fascinated by the Disney movie Frozen and was afraid of her mother.

“I know that she felt very controlled by her mother,” said Eisenmann. “They didn’t have the best relationship. I would hear them on the phone. It was very argumentative.”

Eisenmann said Nachtman would change her grades and changed her major because of her mom. 

Less than a year after rooming together, Nachtman’s mother and stepfather would be found dead at their Carrollwood home. 

The medical examiner took the courtroom back to August 2015, the day Miriam Dienes was found lying in the driveway after being shot three times.

“Each of the wounds fatal,” said Associate Medical Examiner Dr. Leszek Chrostowski. 

According to the Medical Examiner, one of those shots was at close range, less than two feet away. 

Nachtman’s stepdad was found inside the home, wrapped in a comforter.

“The body was deceased for some time because it had signs of early decomposition,” Chrostowski said.

Dienes was shot once from behind.

The lead investigator, Mitchell Messer Jr., testified about his interaction with Nachtman after her parents were found dead. At that time, Nachtman said she was at Florida State in Tallahassee. 

The detective testified that he talked to her by phone, saying that someone had intentionally hurt her mom. 

“Mom doesn’t get along with as many people as you think,” Nachtman told the investigator on the phone call.

“But who do you think did this to her?” asked Messer Jr. 

“I don’t know. She didn’t get along with people at work,” Nachtman responded over the phone. 

Prosecutors said Nachtman planned to kill her mom and stepdad. 

Nachtman’s attorneys said she is mentally ill. 

Nachtman could face the rest of her life in prison if found guilty. Nachtman’s brother will be the final witness for the state.