The horrific attack carried out by Eliza Wasni was completely unprovoked, prosecutors in Chicago said. The victim Grant Nelson, 34, managed to pull over and flee his Uber car for help.
“The victim runs to the lobby door and is heard banging and screaming, ‘Help me, help me, I’m going to die,'” said Assistant State’s Attorney Michelle Cunningham.
Police and paramedics were called and Mr Nelson was rushed to hospital but later died.
Wasni, who has been charged with first-degree murder as an adult, tried to driver Mr Nelson’s car away from the scene but hit a bollard.
Officers responding to 911 calls found her hiding, still holding a knife and a machete.
Mr Nelson’s younger sister Alexandra told of her family’s shock and grief.
“The loss of intelligence and conversation and nuance and thoughtfulness that he brought into all of our lives is going to be felt, and it will reverberate with us throughout the coming weeks and months and years, and it is not a hole that can be easily filled,” she told ABC 7 Chicago.