At the very least, Faora's statement directly contradicts her superior officer's stated motivation. Maybe
she as an individual, really, truly meant it that
she doesn't have a sense of morality. Maybe she really just likes killing for killing's sake, not to serve any greater good.
But Zod, her commanding officer, on the other hand really believes what he is doing is right. Sure, maybe not from the general humankind point of view of what is morally right (aka, our specific sense of morality---after all, humans would be the victims), but definitely from his point of view. Throughout the movie, Zod is not killing just to kill (until the ending, anyway)
Zod truly believes that he is doing the right (moral) thing...from
his point of view, for
his people. If Faora doesn't feel the same way, fine, but she should have said "I" instead of "we".
https://www.youtube.com/watch?v=alFr55dM7b0