was living in Iraq with her ISIS fighter husband in 2015 when he purchased a Yazidi woman and her five-year-old daughter as slaves.

Gliwitzky said the husband, who is facing a separate trial in Frankfurt, subjected the Yazidi woman and her daughter to "daily abuse."

"The 5-year-old daughter was abused by blows to the head and pushing on the floor, which was so strong that the child injured her shoulder," Gliwitzky said.

"The child began to wet the bed from August 2015 ...

However, she did nothing to save the child," he continued.

The girl's mother was the main witness at the trial and was in the courtroom when the judgment was handed down, according to a statement from her legal team, which included human rights lawyer Amal Clooney.

The statement included a quote from the woman, who said: "It was very difficult for me to hear the verdict today.