Hera got grounded for burning food so she snuck out and went into the woods to just cool off and stuff. Then she saw a van full of scientists pull up and she hid behind a tree, she was soon found and got injected with something. She passed out and after a week, she snuck out again. As soon as she got here, her body started falling apart and rotting alive. She threw up her heart and stomach, her side ripped open and her intestines spilt out. She soon died.
The scientists found her body and worked on a new body for her. Soon, they forgot she was a girl entirely and just treated her like a machine.
She was 13 at the time.