Her suffering began soon after little Marie 6 celebrated her sixth birthday.
The mother realised what was going on – but instead of going to the police, she filmed the crimes as a perverse memento for her husband.
Now horror parents Janine and Daniele K. (both 30) are in court in Darmstadt, Hesse facing charges of child abuse.
Like a coward, the stepfather hid his face behind a blue folder. He told the judge quietly: “It started in the bath tub and then it just kept going and escalating.”
According to the prosecution, the truck driver groped the child and forced her to touch him.
Daniele K. confessed: “I also watched child porn.”
For a long time the mother did not want to notice what was going on in the family.
Daniele K. added: “It was never planned, but it overcame me. In each case it only happened when my wife was not at home.”
At least until August 2008.
The accused said: “We had made it cosy for the three of us in the living room. My wife went into the kitchen in order to get some nibbles.”
In the meantime, the stepfather groped Marie, then aged seven. “When my wife came back into the room, it went straight to oral sex. My wife filmed that.”
In the course of that evening, Marie’s stepfather is said to have raped her repeatedly – all in front of the mother!
Sickeningly, Janine K. filmed her child’s agony on her mobile phone.
The perverse parents loaded the video up onto their computer where the police later found more than 15,000 child pornos.
In the summer of 2009, Marie had to see a child psychologist because she kept wetting the bed.
The abuse was uncovered and the youngster needed six months of treatment.
Marie and her two sisters, aged three and six, now live with foster families.
A judgement is due in the case on March 8. The horror parents are facing up to ten years in jail.