"You never know what day it is, what time it is," said Rivera, who has struggled with mental illness. "Sometimes you never see the sun." Rivera was placed in isolation because of allegations, later determined to be unfounded, that she had kissed and touched other detainees, records show. Nearly four weeks into her stint in solitary, she lost her will to live. She fashioned a noose from a torn blanket and hanged herself from the cell's ceiling vent — only to be saved by a passing guard. Rivera was rushed to a hospital. Upon her return to the detention center, she was labeled a suicide threat and placed back in solitary, under even more restrictions."