ChemicalHearts (Creepypasta story)

Raised in a cage and used as a science lab rat, Jade Rivers finally decides that it was enough. Unable to forgive her own father for what he'd done, she would fight to escape the torture even if it costs her life.
Scientifically named Project 102 by her father, Jade experiences what she calls "BlackOuts." The torture she had endured over the eleven years of being locked in a cage has caused her to borne a second entity. Whenever that second entity forces itself through, she no longer has control. But both of them are unwilling to give up.
When her other half is showing, her eyes turn black with pupils generating a whitish green color. She becomes more violent and inhumane. Some of her veins turn to a black hue.
(I suck at summaries so I might rewrite this.)