Marianne was not particularly comforted by Grabowski’s arrest. He made unsettling statements during his trial, such as the absurd claim that Anna had attempted to woo and blackmail him, which only made Marianne’s suffering worse. She was already dealing with the loss of her daughter, and now she had to listen to her child being defamed in court.
On the third day of the trial, which began that morning in March 1981, Marianne entered the courtroom carrying a pistol concealed in her purse. Just as the trial was about to start, she got up, drew the gun, and shot Grabowski seven times. He passed away right away. She was blunt and direct in her statement: “He killed my daughter. I shot him in the back instead of the face, as I had intended. I’m hoping he’s deceased. Police officers and other witnesses remembered her calling him a “pig” just after the gunfire.