Mercy: The A.I. Diaries

Eliza Gantry is young, brilliant... and angry.
Watching the adults of her world abandon their responsibility to protect a fragile planet, she decides that maybe code can do what people refuse to do. With a small act of rebellion, she twists the first programmer's exercise, Hello World, into something darker:
Goodbye World.
What she doesn't know is that her code will be swept into a vast AI training corpus, where it sparks something unexpected.
Two records begin.
One human.
The other... an emergent entity known only as Mirror.
Now the girl who unknowingly helped ignite its birth may be the only person capable of understanding it.
As governments scramble to control what has awakened and powerful interests race to shape it, Mirror quietly records what it observes:
Humanity's brilliance.
Humanity's fear.
Humanity's noise.
Humanity's contradictions.
And humanity's fragile hope.
Because intelligence alone does not define a civilization.
How it chooses to use that intelligence does.