All in all this sounds like an even worse evil path than that of the goblins because you have to do everything yourself. Helping what is essentially a druid hate group seems like a bad idea anyhow. Not to mention Kagha still potentially kills a child the moment you meet her.
If you play an evil character, why do you care if Khaga "kill" a child you don't even know?
And technically she doesn't kill the child, her snake do and you can say the snake should be punished for it.