Becky

Becky lost her arm when she was six.
The Media Lab used 3D printing, nanoactuators, and an AI control system to construct a prosthesis.
A neural interface passed motor and sensory impulses.
She could feel its fingers, brushing on her face.
Strange… a little twitch?
“Just a calibration,” said the doctor. “Nothing else.”
The arm adapted to her needs, anticipating.
As she grew older, the Lab built new frames to fit, using the original AI system.
Until one day a researcher suggested a newer AI.
The arm tore out his throat.
In blood on the table it wrote “She’s mine.”