Teen had her throat slashed and her uterus cut out during brutal murder.

In February, 18-year-old Holli Jeffcoat was murdered in an attack so brutal, it made headlines across the world.

The teenager’s throat was savagely slashed, her uterus removed and her body left to burn along with her family home.

Tragically, police believe Holli was also pregnant at the time, allegedly to her own step-father.

The murder of the mentally disabled teen continues to trouble the community of Lubbock, Texas, as police are still yet to lay any charges over her death.

However, with the recent arrests of Holli’s mother and step-father on sexual assault charges have painted a picture of Holli’s troubled childhood, of a life plagued by pain and fear.

Lubbock County Detention Centre

As James Holland sat behind bars charged with the sexual assault of Holli's sibling, his wife was hauled into custody for failing to stop his alleged abuse or to report it to police.

According to local news outlet the Lubbock-Avalanche Journal, court documents relating to Debi Holland's arrest have now detailed a history of sustained sexual abuse against Holli, stretching back to 2008.

It was then, when she was just 10-years-old, that a routine blood-test following a car accident revealed that she had contracted a sexually transmitted infection. Police were unable to determine who had committed the crime, and no charges were laid.

What follows, according to the Lubbock-Avalanche Journal, are tragic accounts of the teenager reporting abuse by James Holland to staff at her school, including her request not to go home because "sex hurt".

Later, on January 29 of this year, she told them she was pregnant to him, but that he planned to remove the baby with "a hanger".

When these claims were reported to authorities, James Holland was ordered to leave the home, and told not to make contact with Holli or her sibling. However, police have alleged that he not only collected the younger child from school, but sexually abused her on the drive home.

The child later told police she had been assaulted by him for three years. It were these claims that lead to his March 10 arrest.

Just as shocking as the crimes themselves, are claims that Debi Holland refused to allow her daughters to be examined by medical staff and deliberately covered up his abuse.

In one instance, she reportedly insisted that her younger daughter's altered hymen was due to her participation in athletics.

More charges against the pair are pending.