Breana Rouhselang's family speaks to ABC

MISHAWAKA, Ind. -- The father and stepmother of Breana Rouhselang spoke with ABC News' Alex Perez on Tuesday about how they will remember the 17-year-old who was murdered over the weekend.

"I woke up this morning and I wanted to send her a text and I knew there would be nobody on the other end," said Nicole Rouhselang, Breana's stepmom.

They're struggling with the murder of the Mishawaka High School student.

Breana's body was found in a dumpster of a business near her home over the weekend.

"She, she was a sweetheart. Just know she was a sweetheart and she didn't deserve this," Nicole said.

The teen accused of killing her, 16-year-old Aaron Trejo, entered a plea of not guilty during a court hearing Tuesday.

He has been charged with murder and feticide.

Trejo, also a Mishawaka High School student, told police he had been planning to kill Breana and her unborn child for the last week, according to court documents.

Breana died of multiple stab wounds.

"She was the nicest sweetest most innocent girl you'd ever meet," said Dave Rouhselang, Breana's father.

"She never wanted to make anyone mad or upset. She was just there for them," Nicole said.

Trejo said he and Breana fought about the pregnancy. He said she had waited too long to tell him about the pregnancy so she was unable to get an abortion, according to court records.

Trejo was arraigned Tuesday and entered a plea of not guilty.

He is scheduled to be in court again next week.