This chapter is clearly foreshadowing that the "evil, accursed devils" are either not really that evil, or the humans are actually the reason for their ongoing existence.
@Rowdy91
It could also go the Blue Gender route. Where the planet itself created them for the purpose of killing off humans due to them being a blight on the planet.
Like Agent Smith's 'virus' speech in The Matrix. I could find no real fault with his logic.
@Scrabbleman@Dezaki To be fair, zombies are usually matched with civilians, and those who are capable to actually fight the threat in Z scenarious half of the time are evil.
There are levels of survival humans are prepared to accept. However, the relevant issue is whether or not she is ready to accept the responsibility for the death of every goblin being in this world.