Reprogrammed, Rewound, Redeemed?

In a Dark Timeline where Trunks falls to the Androids, no one is the victor. The sole survivor of the Android's rampage decades later recovers the damaged 18 and repairs her for a one way trip to he past. Programmed into the mass murderer is a new mission to avert the dark future. Can she succeed, and can you be redeemed of your atrocities when driven by programming?