Meh, I can buy Peridot theories that she's a young gem who just isn't aware of the significance of what she's doing, given she seems to have no idea how many of her weapons work. I can also buy that she's only checking on the experiments.
She's more like a new supervisor at an evil corporation - just doing her job, sick of all the stress and crap, and just doesn't give a fuck that the new models are made out of human bodies. I don't quite buy the 'Redemption' theories, but I do think we'll see some epiphanies for the wannabe supervillain.