A 27-year old German citizen member of the Islamic State faced war crimes charges for letting a five-year-old "slave" girl die of thirst in Mosul, the British newspaper Guardian reported. Identified as Jennifer W, she first left Germany in 2014 and traveled to Iraq via Turkey and Syria, where she joined ISIS. She was reportedly working as a morality police, patrolling the city parks of Falluja and Mosul.She and her husband purchased the child as a household "slave" in Mosul, German prosecutors reported. “After the girl fell ill and wet her mattress, the husband of the accused chained her up outside as punishment and let the child die of thirst in the scorching heat,” they said in a statement. “The accused allowed her husband to do so and did nothing to save the girl.”Jennifer W was arrested at the German embassy in Ankara, Turkey, when trying to renew her identity papers and extradited to Germany in 2016. When she attempted to fled to Syria earlier this year, the German police arrested her. She could face a life sentence if found guilty.